WO2017086369A1 - Outil de nettoyage interdentaire - Google Patents

Outil de nettoyage interdentaire Download PDF

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Publication number
WO2017086369A1
WO2017086369A1 PCT/JP2016/084034 JP2016084034W WO2017086369A1 WO 2017086369 A1 WO2017086369 A1 WO 2017086369A1 JP 2016084034 W JP2016084034 W JP 2016084034W WO 2017086369 A1 WO2017086369 A1 WO 2017086369A1
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WO
WIPO (PCT)
Prior art keywords
ventral
base
cleaning tool
interdental cleaning
shaft
Prior art date
Application number
PCT/JP2016/084034
Other languages
English (en)
Japanese (ja)
Inventor
侑 吉川
拓未 村瀬
Original Assignee
小林製薬株式会社
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 小林製薬株式会社 filed Critical 小林製薬株式会社
Publication of WO2017086369A1 publication Critical patent/WO2017086369A1/fr

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    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C15/00—Devices for cleaning between the teeth
    • A61C15/02—Toothpicks

Definitions

  • the present invention relates to an interdental cleaning tool.
  • an interdental cleaning tool that is particularly suitable for cleaning the interdental teeth between the back teeth.
  • a base having a shape extending along a specific direction, and an axis having a shape that extends from the tip of the base along a direction intersecting the base and can be inserted between teeth.
  • An interdental cleaning tool is disclosed that includes a portion and a cleaning portion that covers the shaft portion and can clean between the teeth.
  • the base portion has a grip portion having a shape that can be gripped by a finger, and a connecting portion that connects the grip portion and the shaft portion. Since the connecting portion needs to transmit an external force (operation force) applied to the gripping portion during cleaning between teeth to the cleaning portion, the connecting portion is usually designed to have high rigidity.
  • Interdental cleaning with such an interdental cleaning tool is performed in such a manner that the cleaning unit reciprocates along the teeth between the back teeth after insertion into the oral cavity with the cleaning unit at the top while holding the gripping unit. It is done by operating.
  • the boundary between the cleaning part (shaft part) and the connecting part or the vicinity thereof may be damaged during the interdental cleaning with the interdental cleaning tool. There is.
  • An object of the present invention is to provide an interdental cleaning tool capable of suppressing breakage of a boundary between a shaft portion and a connecting portion or a portion in the vicinity thereof.
  • the present inventors have been performing interdental cleaning with an interdental cleaning tool having a grip portion, a connecting portion, and a shaft portion extending in a direction intersecting with the extending direction of the connecting portion. It was found that the breakage at the boundary between the shaft portion and the connecting portion or the portion in the vicinity thereof is caused by the stress concentration occurring at the portion. Specifically, when operating the grip portion so as to reciprocate the cleaning portion between the back teeth, the external force in the direction intersecting the reciprocating direction, particularly the direction in which the interdental cleaning tool is extracted from the oral cavity (withdrawal) Force) is often applied to the grip.
  • the shaft portion is displaced so that the tip end portion of the shaft portion is displaced in a direction intersecting the axial direction of the shaft portion and away from the gripping portion with respect to the boundary between the shaft portion and the connecting portion or in the vicinity thereof.
  • the connecting portion is designed to have high rigidity, when the shaft portion is bent by the action of the pulling force, stress concentration occurs at the boundary or in the vicinity thereof.
  • An interdental cleaning tool is extended between a base portion having a shape extending along a specific direction and a direction intersecting with a direction in which the base portion extends from a distal end portion of the base portion, and is inserted between teeth.
  • a cleaning part that covers at least a part of the outer peripheral surface of the shaft part and that can clean between teeth, and the base part is grasped by a finger.
  • the rigidity of the deformation part is greater than the rigidity of the support part.
  • FIG. 5 is a cross-sectional view taken along line VV in FIG. 2. It is a figure which shows the state which the deformation
  • each interdental cleaning tool 2 includes a base portion 10, a shaft portion 60, and a cleaning portion 70.
  • the base portion 10 has a shape extending along a specific direction (vertical direction in FIG. 2), and a base end portion 20b that is an end portion on one side (the lower side in FIG. 2) of the specific direction and the other side in the specific direction.
  • the tip part 20a which is an edge part of the side (upper side in FIG. 2) is included. Details of the base 10 will be described later.
  • the shaft portion 60 has a shape that extends from the distal end portion 20a of the base portion 10 along the direction intersecting with the extending direction of the base portion 10 and can be inserted between teeth.
  • the extending direction of the base 10 means a direction parallel to a central axis C of the gripping part 20 described later or a direction in which the connecting part 30 extends.
  • the shaft portion 60 has a substantially cylindrical shape. More specifically, the shaft portion 60 is formed in a shape in which the outer diameter of the shaft portion 60 gradually and slightly decreases from the base end portion toward the tip end portion.
  • the shaft portion 60 is formed integrally with the base portion 10.
  • the cleaning unit 70 covers the shaft unit 60 and can clean between the teeth.
  • the cleaning unit 70 is made of an elastomer having a hardness lower than that of the base 10.
  • a styrene elastomer is used as the elastomer.
  • silicon, an olefin elastomer, a polyester elastomer, or the like may be used as the elastomer.
  • the cleaning unit 70 includes a cleaning unit main body 72 having a shape that covers the outer peripheral surface of the shaft unit 60, and a plurality of brush bristles 74.
  • the cleaning unit main body 72 has a cylindrical outer peripheral surface.
  • the thickness of the cleaning portion main body 72 is set smaller than the diameter of the shaft portion 60.
  • Each brush hair 74 is formed integrally with the cleaning unit main body 72 from the same material as the cleaning unit main body 72. Each brush hair 74 protrudes outward in the direction orthogonal to the axial direction of the shaft portion 60 from the outer peripheral surface of the cleaning portion main body 72 and gradually increases as the distance from the outer peripheral surface of the cleaning portion main body 72 increases. It has a shape with a small outer shape. In this embodiment, each bristle 74 is formed in a conical shape.
  • the base portion 10 includes a grip portion 20 including a base end portion 20b and a connecting portion 30 including a distal end portion 20a.
  • the base 10 is preferably formed of one or a combination of two or more synthetic resins such as polypropylene, ABS, polybutylene terephthalate, polycarbonate, polyethylene terephthalate, polystyrene, and polyacetal. From the viewpoint that damage to the boundary between the shaft portion 60 and the support portion 32 or the vicinity thereof is more reliably suppressed, the base portion 10 is preferably formed of polypropylene. In the present embodiment, the base 10 is made of polypropylene.
  • the shaft portion 60 is also formed of the same synthetic resin as the base portion 10.
  • a reinforcing agent is contained in the synthetic resin forming the base portion 10.
  • agents include fibrous reinforcing agents such as glass fibers, nanocellulose fibers, aramid fibers, and carbon fibers, plate-like reinforcing agents such as mica and glass flakes, powdery reinforcing agents such as talc, and wollastonite.
  • plate-like reinforcing agents such as mica and glass flakes
  • powdery reinforcing agents such as talc, and wollastonite.
  • examples include needle-shaped reinforcing agents.
  • the content of the reinforcing agent is usually 5 to 50% by weight, preferably 10 to 40% by weight, and more preferably 15 to 40% by weight.
  • the polypropylene forming the base 10 contains 10% by weight glass fiber and 20% by weight mica.
  • the grip 20 has a shape that can be gripped with a finger.
  • the grip 20 includes a ventral edge 21 formed on one side (left side in FIG. 2) of the width direction (left and right direction in FIG. 2) perpendicular to the specific direction, and an edge on the other side in the width direction. And a back side edge portion 22 formed on the back side.
  • the ventral side edge portion 21 and the back side edge portion 22 each have a shape extending linearly along a specific direction.
  • the dimension of the grip part 20 in the specific direction is set larger than the dimension of the grip part 20 in the width direction (the dimension between the ventral edge 21 and the back edge 22). Further, the dimension in the width direction of the grip portion 20 is set larger than that of the connecting portion 30.
  • the connecting part 30 connects the grip part 20 and the shaft part 60 together.
  • the connecting portion 30 includes a support portion 32 that includes the distal end portion 20 a of the base portion 10 and supports the shaft portion 60, and a deformable portion 34 that is interposed between the support portion 32 and the grip portion 20.
  • the deformable portion 34 is elastically deformable so as to allow the support portion 32 to be displaced in the width direction with respect to the grip portion 20.
  • the rigidity of the deforming portion 34 is set smaller than the rigidity of the support portion 32.
  • the support portion 32 is located between the shaft portion 60 and the central axis C of the grasping portion 20 (a vertical bisector of a line segment connecting the ventral edge 21 and the back edge 22). As described above, the support portion 32 and the grip portion 20 are interposed.
  • the deforming part 34 has a ventral side deforming part 40 and a dorsal side deforming part 50.
  • the ventral-side deformable portion 40 includes a portion closer to the shaft portion 60 (left side in FIG. 2) than the central axis C of the grip portion 20 in the width direction of the grip portion 20 and the width direction of the support portion 32. It is interposed between the central part of the support part 32 and the part closer to the shaft part 60.
  • the ventral side deformable portion 40 includes a ventral side base portion 42 and a ventral side deformable portion main body 44.
  • the ventral base part 42 is connected to the grip part 20.
  • the ventral base portion 42 has a shape that gradually decreases in size in the width direction as it separates from the grip portion 20 and curves so as to separate from the central axis C of the grip portion 20.
  • the ventral side deformable portion main body 44 is interposed between the ventral side base portion 42 and the support portion 32 and has a shape extending linearly along a specific direction.
  • the dimension in the width direction of the ventral side deformable part main body 44 is set to be smaller than the dimension in the width direction of the ventral side base part 42. For this reason, as shown in FIG. 6, when an external force is applied to the support portion 32 such that the support portion 32 is displaced in the width direction with respect to the grip portion 20, the ventral base portion 42 and the ventral deformable portion main body.
  • the ventral side deformable portion 40 is elastically deformed so as to be bent at the boundary with 44.
  • the boundary between the ventral base portion 42 and the ventral deformable portion main body 44 constitutes the “abdominal bent portion 40a”.
  • the ventral side deformable portion main body 44 is formed in a columnar shape.
  • transformation part 50 is located on the opposite side to the axial part 60 on the basis of the ventral side deformation part 40 about the width direction, and is separated from the ventral side deformation part 40 about the width direction.
  • the dorsal deforming portion 50 includes a portion on the side farther from the shaft portion 60 than the central axis C of the gripping portion 20 in the width direction of the gripping portion 20 (on the right side in FIG. 2) and the width direction of the support portion 32. It is interposed between the central portion of the support portion 32 and the portion farther from the shaft portion 60.
  • the back side deformation part 50 has a back side base part 52 and a back side deformation part main body 54.
  • the back side base part 52 is connected to the grip part 20.
  • the dorsal base portion 52 has a shape in which the dimension in the width direction gradually decreases as the distance from the grip portion 20 increases.
  • the dorsal base portion 52 has a shape that curves so as to be convex toward the ventral base portion 42.
  • the back side deformation part main body 54 has a shape extending linearly along a specific direction while being interposed between the back side base part 52 and the support part 32.
  • the dimension in the width direction of the back side deformable part main body 54 is set to be smaller than the dimension in the width direction of the back side base part 52. For this reason, as shown in FIG. 6, when an external force is applied to the support portion 32 so that the support portion 32 is displaced in the width direction with respect to the gripping portion 20, the dorsal base portion 52 and the dorsal deformation portion.
  • the dorsal deforming portion 50 is elastically deformed so as to be bent at the boundary with the main body 54.
  • the boundary between the dorsal base portion 52 and the dorsal deformable portion main body 54 constitutes the “dorsal bent portion 50a”.
  • the dorsal bent portion 50a is formed in a portion of the dorsal deformable portion 50 that is closer to the support portion 32 than a portion that overlaps the ventral bent portion 40a in the width direction.
  • the distance from the support part 32 to the ventral side bent part 40a is set longer than the distance from the support part 32 to the back side bent part 50a.
  • the back side deformable portion main body 54 is formed in a quadrangular prism shape.
  • the dimension W2 in the width direction of the dorsal deformable body 54 is set smaller than the dimension W1 in the width direction of the ventral deformable body 44. Further, the dimension D2 of the dorsal deformation main body 54 in the depth direction (vertical direction in FIG. 5) orthogonal to both the specific direction and the width direction is larger than the dimension D1 of the ventral deformation main body 44 in the same direction. Is set.
  • the interdental cleaning tool group 1 has a plurality (eight in this embodiment) of interdental cleaning tools 2 connected to each other.
  • each interdental cleaning tool 2 is in a state where the boundary between the base portion 10 and the shaft portion 60 of the adjacent interdental cleaning tool 2 is biased in a specific direction.
  • the boundary between the base 10 and the shaft portion 60 in the interdental cleaning tool 2 located on one side (for example, the right side) of the specific interdental cleaning tool 2 in the width direction is the base in the specific interdental cleaning tool 2.
  • each gripping part 20 is located at a position deviated by a predetermined dimension L in the opposite direction from the base end part 20b of the base part 10 with respect to the specific direction from the boundary between the base part 10 and the shaft part 60. 22 and the ventral edge 21 are connected to each other.
  • each base 10 of the interdental cleaning tool group 1 is specified so as to be aligned along a straight line parallel to a straight line connecting the boundaries between the base 10 and the shaft part 60 of each interdental cleaning tool 2. It has a shape that is inclined with respect to the direction.
  • the interdental cleaning tool group 1 is manufactured by a mold. Specifically, first, a synthetic resin (this embodiment) for forming the base portion 10 and the shaft portion 60 in a first mold having a space in which the base portion 10 and the shaft portion 60 of each interdental cleaning tool 2 can be formed. In the form, polypropylene) is filled from the base end 20 b side of the base 10. Thereafter, the cleaning unit 70 is placed in the second mold in a state where the molded product (the base 10 and the shaft part 60) by the first mold is placed in the second mold having a space in which the cleaning unit 70 can be formed.
  • a synthetic resin this embodiment for forming the base portion 10 and the shaft portion 60 in a first mold having a space in which the base portion 10 and the shaft portion 60 of each interdental cleaning tool 2 can be formed.
  • polypropylene polypropylene
  • An elastomer to be formed (in this embodiment, a styrene-based elastomer) is filled from the tip portion 20a side of the shaft portion 60.
  • die has a partition wall which partitions off the site
  • the boundary between the base portion 10 and the shaft portion 60 of the interdental cleaning tool 2 located on one side of the specific interdental cleaning tool 2 is the specific interdental cleaning tool 2. Since it deviates in a specific direction from the boundary between the base portion 10 and the shaft portion 60, the dimension between the cleaning portions 70 of the adjacent interdental cleaning tools 2 is ensured. Therefore, the thickness of the partition wall of the second mold can be increased. Therefore, it is possible to increase the degree of freedom in designing the second mold while setting the angle formed by the base portion 10 and the shaft portion 60 within a range suitable for cleaning between the back teeth.
  • the dimension in the width direction of the grip part 20 is set larger than the dimension in the width direction of the connecting part 30, the dimension between the cleaning parts 70 adjacent to each other becomes larger. Therefore, both the design freedom of the angle formed by the base portion 10 and the shaft portion 60 and the design freedom of the mold are further improved.
  • each base portion 10 is inclined with respect to a specific direction so as to be aligned along a straight line parallel to a straight line connecting the boundaries between the base portion 10 and the shaft portion 60 of each interdental cleaning tool 2. Therefore, it is possible to avoid an increase in the size of the mold and an increase in the size of the accommodating part such as a packaging container that accommodates the interdental cleaning tool group 1.
  • one (for example, end) interdental cleaning tool 2 is removed from the interdental cleaning tool group 1, and the interdental cleaning is performed from the front tooth side toward the back tooth side with the cleaning portion 70 of the interdental cleaning tool 2 as the head.
  • Tool 2 is inserted into the oral cavity.
  • the holding part 20 is operated so that the cleaning part 70 reciprocates along between back teeth.
  • an external force in a direction intersecting the reciprocating direction of the gripping part 20 (cleaning part 70), particularly a pulling force in a direction in which the interdental cleaning tool 2 is pulled out from the oral cavity is applied to the gripping part 20. May join.
  • the breakage of the boundary between the shaft portion 60 and the support portion 32 or the vicinity thereof is suppressed.
  • the external force for example, pulling force
  • the deforming portion 34 is elastically deformed so that the support portion 32 is displaced in the width direction with respect to the grip portion 20.
  • the shaft portion 60 bends such that the tip of the shaft portion 60 is displaced in a direction intersecting the axial direction of the shaft portion 60 with respect to the support portion 32.
  • the deformation portion 34 absorbs a part of the stress generated at the boundary between the shaft portion 60 and the support portion 32 or a portion in the vicinity thereof as strain energy. Therefore, since the stress which arises in the boundary part of the axial part 60 and the support part 32 or the site
  • the deforming portion 34 includes the ventral-side deforming portion 40 and the dorsal-side deforming portion 50 that are separated from each other in the width direction, the deforming portion 34 having a small rigidity can be easily obtained. Specifically, since the abdominal deformation part 40 and the back deformation part 50 form a space between each other, the rigidity of the deformation part 34 is reduced.
  • the dimension W2 in the width direction of the dorsal deforming part 50 is smaller than the dimension W1 in the width direction of the ventral deforming part 40, the boundary between the shaft part 60 and the support part 32 or the vicinity thereof during cleaning between teeth. The damage of the part is more reliably suppressed. Specifically, especially during the cleaning between the back teeth, the pulling force is often applied to the grip portion 20, and in this case, the support portion 32 is connected to the ventral deformation portion 40 via the shaft portion 60. An external force in the direction toward the dorsal deforming portion 50 acts.
  • the support part 32 is deformed from the ventral deformation part 40 to the dorsal deformation with respect to the grip part 20. It becomes easy to be displaced in the direction toward the portion 50. Therefore, breakage of the boundary between the shaft portion 60 and the support portion 32 or a portion in the vicinity thereof is more reliably suppressed.
  • the dimension D2 in the depth direction of the dorsal deforming portion 50 is larger than the dimension D1 in the depth direction of the ventral deforming portion 40, the ease of displacement of the support portion 32 in the width direction with respect to the grip portion 20 is ensured.
  • ventral side bent portion 40a and the back side bent portion 50a are separated from each other in a specific direction, an external force acts on the support portion 32 so that the support portion 32 is displaced in the width direction with respect to the grip portion 20.
  • the deformation (breaking) of the deforming portion 34 when it is done is suppressed.
  • the ventral side bent portion 40a and the back side bent portion 50a are formed at positions overlapping in the width direction without being separated from each other in a specific direction, the bent portion deforms when the external force is applied.
  • the portion 34 is easily broken, the abdomen bent portion 40a and the dorsal bent portion 50a are separated from each other in a specific direction, so that the deformation portion 34 is prevented from being damaged when the external force is applied.
  • the distance from the support portion 32 to the ventral side bent portion 40a is longer than the distance from the support portion 32 to the back side bent portion 50a. For this reason, when the pulling force is applied to the grip portion 20, the support portion 32 is easily displaced in the direction from the ventral deformation portion 40 toward the dorsal deformation portion 50, so that the shaft portion 60 and the support portion 32 The breakage of the boundary or the vicinity thereof is further reliably suppressed. Specifically, when the pulling force is applied, the support portion 32 moves in the direction from the ventral-side deformable portion 40 toward the dorsal-side deformable portion 50 with respect to the grasping portion 20 (the direction toward the central axis C of the grasping portion 20).
  • the deforming portions 40 and 50 When the deforming portions 40 and 50 are displaced so as to be displaced, a part of the stress generated at the boundary between the shaft portion 60 and the support portion 32 or a portion in the vicinity thereof is absorbed by the deforming portion 34. From the amount of displacement of the dorsal deforming portion 50 necessary for the portion 32 to be displaced by a specific distance along the direction from the ventral deforming portion 40 toward the dorsal deforming portion 50 (the direction toward the central axis C of the gripping portion 20). However, the ventral deforming portion 40 is larger.
  • the distance from the support part 32 to the abdominal bending part 40 a is longer than the distance from the support part 32 to the dorsal bending part 50 a, so that the displacement amount of the dorsal deformation part 50 is larger. It is easy to ensure a large amount of displacement of the ventral side deformable portion 40. Therefore, a part of the stress acting on the boundary between the shaft portion 60 and the support portion 32 or a portion in the vicinity thereof is easily absorbed.
  • the structure of the deforming part 34 is not limited to the above example.
  • the deformable portion 34 has a portion that fills between the ventral deformable portion 40 and the dorsal deformable portion 50, and the entire deformable portion 34 including the portion has a hardness lower than the hardness of the support portion 32. (Elastomer etc.) may be used. Even in this case, the rigidity of the deformable portion 34 can be made smaller than the rigidity of the support portion 32.
  • FIG. 7 shows a modification of the interdental cleaning tool 2 of the above embodiment.
  • the abdominal deformable portion 40 and the dorsal base portion 52 are formed of a synthetic resin such as polypropylene, and the cleaning portion 70, the dorsal deformable portion main body 54, the cleaning portion 70, and the dorsal deformable portion main body 54.
  • the boundary between the dorsal base portion 52 and the dorsal deformable portion main body 54 constitutes the dorsal bent portion 50a.
  • the distance from the support portion 32 to the ventral side bent portion 40a is set longer than the distance from the support portion 32 to the back side bent portion 50a. Even in this interdental cleaning tool 3, when the pulling force is applied to the gripping part 20, the deformation parts 40, 50 are effectively elastically deformed so as to be bent at the respective bending parts 40a, 50a. Part of the stress generated at the boundary between the portion 60 and the support portion 32 or at the vicinity thereof is absorbed.
  • FIG. 8 shows another modification of the interdental cleaning tool 2 of the above embodiment.
  • the interdental cleaning tool 4 a cutout is formed in each of the abdominal deformable portion 40 and the dorsal deformable portion 50.
  • the notches constitute the bent portions 40a and 50a.
  • the distance from the support part 32 to the abdominal bending part 40a is set longer than the distance from the support part 32 to the back bending part 50a. Even in this aspect, the same effect as described above can be obtained.
  • the embodiment described above includes an invention having the following configuration.
  • the interdental cleaning tool of the above-described embodiment is extended between a base portion having a shape extending along a specific direction and a direction intersecting with a direction in which the base portion extends from the distal end portion of the base portion, and is inserted between teeth. And a cleaning part that covers at least a part of the outer peripheral surface of the shaft part and that can clean between teeth, and the base part can be gripped by a finger.
  • a gripping portion having a shape, and a connecting portion that connects the gripping portion and the shaft portion, wherein the connecting portion includes a tip portion of the base portion and supports the shaft portion; and the support And a deformable portion that is elastically deformable to allow the support portion to be displaced in a width direction perpendicular to the specific direction with respect to the grip portion.
  • the rigidity of the deformation part is smaller than the rigidity of the support part.
  • the rigidity of the deforming part is smaller than the rigidity of the support part, it intersects the reciprocating direction of the cleaning part when the gripping part is operated so that the cleaning part reciprocates along the teeth.
  • the deformable portion is elastically deformed so that the support portion is displaced in the width direction with respect to the grip portion.
  • the shaft portion is bent so that the tip of the shaft portion is displaced with respect to the support portion in a direction intersecting the axial direction of the shaft portion.
  • the deformation part absorbs a part of the stress generated at the boundary between and the vicinity thereof as strain energy. Accordingly, since the stress generated at the boundary between the shaft portion and the support portion or a portion in the vicinity thereof is reduced, the breakage of the portion is suppressed.
  • the deforming portion is positioned on the opposite side of the shaft portion with respect to the ventral deforming portion with respect to the ventral deforming portion in the width direction, and is separated from the ventral deforming portion in the width direction. It is preferable to have the back side deformation
  • the abdominal deformable portion and the dorsal deformable portion are separated from each other in the width direction, that is, the ventral deformable portion and the dorsal deformable portion form a space between each other. The rigidity of the part is reduced.
  • the dimension in the width direction of the dorsal deformation part is smaller than the dimension in the width direction of the ventral deformation part.
  • the dimension of the dorsal deforming part in the depth direction orthogonal to both the specific direction and the width direction is larger than the dimension of the ventral deforming part in the depth direction.
  • the ventral deforming portion is bent when an external force is applied to the support portion so that the support portion is displaced in the width direction with respect to the grip portion.
  • the dorsal deformation portion has a dorsal bending portion that bends when an external force is applied to the support portion such that the support portion is displaced in the width direction with respect to the grip portion; It is preferable that the ventral side bent portion and the dorsal side bent portion are separated from each other in the specific direction.
  • the ventral deforming portion is interposed between the ventral base portion connected to the grasping portion, the ventral base portion and the support portion, and the width direction of the ventral base portion.
  • a ventral deformable portion main body having a size in the width direction smaller than the dimension of the back side deformable portion, the dorsal deformable portion being connected to the gripping portion, the dorsal base portion, A dorsal deformable body having a widthwise dimension smaller than the widthwise dimension of the dorsal base part, and being interposed between the support part, the ventral base part and the belly
  • the boundary with the side deformation part main body constitutes the ventral side bending part
  • the boundary between the dorsal side base part and the back side deformation part main body constitutes the back side bending part.
  • the abdominal bent part is formed by making the width direction dimension of the abdominal deformable portion main body smaller than the width direction dimension of the abdominal foundation part, and the width direction dimension of the dorsal foundation part.
  • the back-side bent portion is formed by reducing the dimension in the width direction of the back-side deformable portion main body.
  • the distance from the support portion to the ventral side bent portion is longer than the distance from the support portion to the back side bent portion.
  • the following examples were created for the interdental cleaning tool group 1 of the above embodiment.
  • the first type embodiment in which the reinforcing agent is not added to the synthetic resin that integrally forms the shaft portion 60 and the base portion 10, and the synthetic resin that integrally forms the shaft portion 60 and the base portion 10.
  • a second type example in which a reinforcing agent is added, and a third type example in which two or more types of reinforcing agents are added to the synthetic resin that integrally forms the shaft part 60 and the base part 10;
  • a fourth type embodiment in which a reinforcing agent and an elastomer are added to a synthetic resin that integrally forms the shaft portion 60 and the base portion 10 was produced.
  • Each example was created as follows.
  • Second type embodiment As a resin material for forming the cleaning portion 70, four types of styrene elastomer, olefin elastomer, polyester elastomer, and silicon, and as a synthetic resin for forming the shaft portion 60 and the base portion 10, polypropylene, polyethylene, ABS, and polybutylene are used. 36 types of first type examples were prepared by combining each of terephthalate, polycarbonate, polyethylene terephthalate, polystyrene, polyacetal, ABS and polypropylene mixed at a ratio of 3: 7, and 9 types.
  • the glass fiber is added to the synthetic resin so that the glass fiber content in the shaft portion 60 and the base portion 10 is 33% by weight
  • the nanocellulose fiber is a nanocellulose fiber in the shaft portion 60 and the base portion 10.
  • the talc is added to the synthetic resin so that the content of talc in the shaft part 60 and the base part 10 is 20% by weight.
  • the mica content in the part 60 and the base part 10 is added to the synthetic resin so that the content is 40% by weight, and the glass flake content in the shaft part 60 and the base part 10 is 40% by weight.
  • the wollastonite is added to the synthetic resin so that the content of wollastonite in the shaft portion 60 and the base portion 10 is 50% by weight.
  • the amount contained in the shaft portion 60 and the base 10 is added to the synthetic resin so as to be 30 wt%.
  • the shaft portion 60 is difficult to break with respect to the force applied to the shaft portion 60 in the vertical direction, is excellent in compatibility with the cleaning portion 70 made of a styrene-based elastomer, and uses polypropylene as the shaft portion 60 and the base portion 10.
  • the shaft portion 60 is less likely to buckle against the pressing force in the direction of the shaft portion 60, and the sharpness of the gate marks at the time of molding the shaft portion 60 and the base portion 10 is suppressed, making it difficult to feel pain. Ease of disconnection was improved. Further, when the shaft portion 60 and the base portion 10 are made of polypropylene containing 40% by weight of these mica, polypropylene containing 40% by weight of glass flakes, and polypropylene containing 50% by weight of wollastonite, 33% by weight of glass fiber is used.
  • the strength of the shaft portion 60 with respect to the pressing force in the direction of the shaft portion 60 is equal to or higher, and the strength of the shaft portion 60 against the force applied in the vertical direction of the shaft portion 60 is higher than the strength.
  • the shaft 60 and the base 10 when a polypropylene containing 40% by weight of glass flakes and a polypropylene containing 50% by weight of wollastonite are employed as the shaft 60 and the base 10, the shaft 60 is bent against the force applied to the shaft 60 in the vertical direction. It was excellent in hardness.
  • the sharpness of the marks was suppressed and it was difficult to feel pain, and the difficulty in bending of the shaft portion 60 with respect to the force in the vertical direction of the shaft portion 60 was improved.
  • the content in the shaft portion 60 and the base portion 10 is 8 for each of polypropylene, polyethylene, ABS, polybutylene terephthalate, polycarbonate, polyethylene terephthalate, polystyrene, and polyacetal, Added to 10% glass fiber and 30% talc, added 10% glass fiber and 10% mica, 5% glass fiber and 35% mica Added, glass fiber 30% by weight and mica added to 10% by weight, glass fiber 10% by weight and glass flake 30% by weight, glass fiber 10% by weight and wax Added to last 30% by weight 48 types of shaft portions 60 and base portion 10 formed by adopting one selected from six types of combinations of reinforcing agents and blending amounts thereof, and four types of cleaning consisting of the above four resin materials 192 types of third-type examples were created by combining each of the unit 70 and the unit 70.
  • the shaft portion 60 bends against the force applied in the vertical direction of the shaft portion 60. It is difficult and flexible, has excellent compatibility with the cleaning unit 70 made of styrene-based elastomer, is less likely to buckle the shaft 60 against the pressing force in the direction of the shaft 60, and gate traces when the shaft 60 and the base 10 are molded In addition to being excellent in ease of disconnection of the connection between the base portions 10, the force applied in the vertical direction of the shaft portion 60 as compared with the case where polypropylene containing glass fiber alone is adopted.
  • the shaft portion 60 In contrast to the case where the shaft portion 60 is hard to be broken and is excellent in flexibility and is made of polypropylene containing a reinforcing agent other than glass fiber alone, the pressing force in the direction of the shaft portion 60 is reduced. Department 60 were those hard to buckle.
  • the shaft part 60 is not easily broken with respect to the force applied in the vertical direction of the shaft part 60, and is flexible.
  • a polypropylene containing 3.5% by weight of a styrene elastomer and 40% by weight of mica is adopted as the base part 10
  • the shaft part 60 is not easily broken against the force applied in the vertical direction of the shaft part 60 and has flexibility.
  • the shaft part 60 is not easily buckled against the pressing force in the direction of the shaft part 60, and the sharpness of the gate marks when the shaft part 60 and the base part 10 are molded is suppressed. It is not easy to feel pain, and it is not only excellent in the disconnection of the bases 10 but also in the vertical direction of the shaft 60 as compared with the shaft 60 and the base 10 using polypropylene containing 40% by weight of mica. The shaft portion 60 was not easily broken against such force, and the flexibility was improved.
  • the breakage of the portion is suppressed.
  • a reinforcing agent such as glass fiber, glass flake, or wollastonite as described above is contained, or when an elastomer is contained in addition to the reinforcing agent, the breakage of the portion is suitably suppressed.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Brushes (AREA)

Abstract

La présente invention concerne un outil de nettoyage interdentaire (2) qui est pourvu d'une partie de base (10), d'une partie de tige (60) et d'une partie de nettoyage (70). La partie de base (10) est pourvue de : une partie de préhension (20); et une partie de raccordement (30) pour raccorder la partie de préhension (20) et la partie de tige (60). La partie de raccordement (30) est pourvue de : une partie de support (32) qui comprend l'embout de la partie de base (10), et qui soutient la partie de tige (60); et une partie de déformation (34) qui est disposée entre la partie de support (32) et la partie de préhension (20), et qui est capable de se déformer de façon élastique de manière à permettre le déplacement de la partie de support (32) dans la direction de la largeur par rapport à la partie de préhension (20). La rigidité de la partie de déformation (34) est inférieure à celle de la partie de support (32).
PCT/JP2016/084034 2015-11-17 2016-11-17 Outil de nettoyage interdentaire WO2017086369A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-224432 2015-11-17
JP2015224432A JP6639875B2 (ja) 2015-11-17 2015-11-17 歯間清掃具

Publications (1)

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WO2017086369A1 true WO2017086369A1 (fr) 2017-05-26

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JP (1) JP6639875B2 (fr)
WO (1) WO2017086369A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019131646A1 (fr) * 2017-12-28 2019-07-04 小林製薬株式会社 Outil de nettoyage interdentaire et procédé de fabrication d'une partie de base
US11351705B2 (en) * 2016-12-28 2022-06-07 Kobayashi Pharmaceutical Co., Ltd. Method for manufacturing interdental cleaning tool
US11358312B2 (en) * 2016-12-28 2022-06-14 Kobayashi Pharmaceutical Co., Ltd. Method for manufacturing interdental cleaner

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018002147B3 (de) * 2018-03-16 2019-06-13 Interbros Gmbh Interdentalreiniger
JP7378294B2 (ja) * 2019-12-27 2023-11-13 小林製薬株式会社 歯間清掃具
JP2021106721A (ja) * 2019-12-27 2021-07-29 小林製薬株式会社 歯間清掃具
JP7503942B2 (ja) 2020-06-30 2024-06-21 小林製薬株式会社 歯間清掃具

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001211936A (ja) * 1999-11-25 2001-08-07 Johnson & Johnson Kk 歯清掃部材用の柄

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Publication number Priority date Publication date Assignee Title
JPS62174423U (fr) * 1986-04-25 1987-11-06
JPH0344428U (fr) * 1989-09-04 1991-04-25
US5146645A (en) * 1991-03-01 1992-09-15 The Procter & Gamble Company Toothbrush employing resiliently buckling arch to indicate excessive brushing pressure

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001211936A (ja) * 1999-11-25 2001-08-07 Johnson & Johnson Kk 歯清掃部材用の柄

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11351705B2 (en) * 2016-12-28 2022-06-07 Kobayashi Pharmaceutical Co., Ltd. Method for manufacturing interdental cleaning tool
US11358312B2 (en) * 2016-12-28 2022-06-14 Kobayashi Pharmaceutical Co., Ltd. Method for manufacturing interdental cleaner
WO2019131646A1 (fr) * 2017-12-28 2019-07-04 小林製薬株式会社 Outil de nettoyage interdentaire et procédé de fabrication d'une partie de base
JP2019118517A (ja) * 2017-12-28 2019-07-22 小林製薬株式会社 歯間清掃具及び基部の製造方法
JP2023040285A (ja) * 2017-12-28 2023-03-22 小林製薬株式会社 歯間清掃具及び基部の製造方法
JP7252708B2 (ja) 2017-12-28 2023-04-05 小林製薬株式会社 歯間清掃具及び基部の製造方法
JP7412611B2 (ja) 2017-12-28 2024-01-12 小林製薬株式会社 歯間清掃具及び基部の製造方法

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JP6639875B2 (ja) 2020-02-05

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