WO2020137248A1 - Interdental cleaning tool - Google Patents

Interdental cleaning tool Download PDF

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Publication number
WO2020137248A1
WO2020137248A1 PCT/JP2019/045063 JP2019045063W WO2020137248A1 WO 2020137248 A1 WO2020137248 A1 WO 2020137248A1 JP 2019045063 W JP2019045063 W JP 2019045063W WO 2020137248 A1 WO2020137248 A1 WO 2020137248A1
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WO
WIPO (PCT)
Prior art keywords
cleaning tool
interdental cleaning
tip
shaft portion
base
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Application number
PCT/JP2019/045063
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French (fr)
Japanese (ja)
Inventor
侑 吉川
紘貴 朝山
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小林製薬株式会社
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Application filed by 小林製薬株式会社 filed Critical 小林製薬株式会社
Publication of WO2020137248A1 publication Critical patent/WO2020137248A1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C15/00Devices for cleaning between the teeth
    • A61C15/02Toothpicks

Definitions

  • the present invention relates to an interdental cleaning tool.
  • the interdental cleaning tool disclosed in Patent Document 1 includes a base material part made of synthetic resin and a soft part made of elastomer.
  • the base material portion includes a flat handle portion serving as a handle, and an elongated core base material portion extending from the tip of the handle portion.
  • the soft part includes a covering part that covers at least a part of the core base material part, and a plurality of projecting parts that project from the covering part.
  • the core base material portion is formed in a taper shape whose diameter decreases toward its tip, and therefore the outer shape of the soft portion also decreases in diameter toward its tip.
  • this invention aims at providing the interdental cleaning tool which a user can use comfortably.
  • An interdental cleaning tool covers at least a part of a base portion having a base portion and a shaft portion extending from the base portion and having a diameter reduced toward a tip thereof. And a soft part, and a cutting part for cutting the shaft part is provided.
  • the tip end side of the shaft portion is used for cleaning between the relatively narrow teeth
  • the base end side of the shaft portion is used for cleaning between the relatively wide teeth.
  • the interdental cleaning tool is formed with a cutting portion that enables cutting of the shaft portion, for example, by cutting a part of the tip end side of the shaft portion, the user can remove the base end side of the shaft portion. Only part can be used for cleaning. As a result, it is possible to prevent a part of the tip end side of the shaft portion from hitting the tongue and gums of the user. The user can comfortably use the interdental cleaning tool.
  • the cutting portion may be a notch formed in the shaft portion, and in this case, the notch may be exposed on the outer surface of the interdental cleaning tool. Further, the cut portion may be a step formed by reducing the diameter of the shaft portion.
  • the interdental cleaning tool which a user can use comfortably can be provided.
  • FIG. 3 is an end view taken along line 3-3 of FIG. 1. It is sectional drawing which shows the process of forming a base material part. It is sectional drawing which shows the process of forming a cleaning part. It is an end view which corresponds to FIG. 3 and which shows schematically the structure of the interdental cleaning tool which concerns on one modification.
  • an interdental cleaning tool 1 includes a base material portion 10 and a soft portion 20 that covers at least a part of the base material portion 10. ing.
  • this interdental cleaning tool 1 for example, ten interdental cleaning tools 1 are connected in parallel in the lateral direction D1 of the interdental cleaning tool 1 by means of a connecting portion (not shown) formed in the base material portion 10. It is individually separated from the formed connecting body.
  • the base material part 10 extends in a longitudinal direction D2 orthogonal to the lateral direction D1 of the interdental cleaning tool 1 from the tip of the base part 11 that is gripped by the user, and is inserted between the teeth of the user. And a shaft portion 12 that is provided.
  • the side from the base portion 11 toward the shaft portion 12 is referred to as the tip end side
  • the side from the shaft portion 12 toward the base portion 11 is referred to as the base end side.
  • the base 11 is formed in, for example, a flat plate shape, and is formed in, for example, a flat rectangular parallelepiped shape in the present embodiment, but may be formed in any other shape as long as it can be grasped by a user. May be done.
  • the shaft portion 12 extends in the longitudinal direction D2 from a tip that is one end of the base portion 11.
  • the shaft portion 12 has a flat plate-shaped transition portion 12a that reduces the width of the shaft portion 12 defined along the lateral direction D1 as it goes toward the tip of the shaft portion 12, and the shaft portion 12 from the tip of the transition portion 12a.
  • a columnar tip portion 12b extending to the tip of the column.
  • the tip portion 12b is formed in a tapered shape whose diameter decreases from the base end toward the tip.
  • the length L1 of the base material portion 10 defined in the longitudinal direction D2 is set to, for example, 45 mm to 55 mm.
  • the width W1 of the base 11 defined in the lateral direction D1 is set to, for example, 3 mm to 10 mm, and the thickness T1 of the base 11 defined in the direction D3 orthogonal to the lateral direction D1 and the longitudinal direction D2 is 0, for example. It is set to 0.5 mm to 10 mm.
  • the diameter of the tip portion 12b is set to, for example, 0.6 mm to 3.0 mm, and in one example, the diameter of the tip portion 12b is gradually increased from 0.3 mm at the tip of the tip portion 12b to 20.5 mm at the base end. Increase.
  • the base material portion 10 is formed of, for example, a synthetic resin material.
  • a synthetic resin material for example, polypropylene, polyethylene, ABS (acrylonitrile butadiene styrene), polybutylene terephthalate, polycarbonate, polyethylene terephthalate, polystyrene, polyacetal, polyamide or the like can be used.
  • a fiber material such as glass fiber may be added to the synthetic resin material in a ratio of, for example, about 1 to 30% by weight.
  • the soft portion 20 includes a covering portion 21 that covers almost the entire outer peripheral surface of the tip portion 12b of the shaft portion 12 from the base end to the tip end, and a plurality of protrusion portions 22 that protrude from the covering portion 21.
  • the length of the covering portion 21 from the base end to the tip defined in the longitudinal direction D2 is set to, for example, 10 mm to 25 mm.
  • the covering portion 21 is formed to have a uniform thickness at the same position in the D2 direction, and the thickness is set to, for example, 0.1 mm to 2.5 mm.
  • the above-described problem of the present invention is more likely to occur as the covering portion 21 is longer, and, on the other hand, since the interdental cleaning tool has various sizes, the covering portion 21 of the covering portion 21 defined in the longitudinal direction D2 is formed.
  • the length is preferably 15 mm or more, more preferably 16 mm or more, particularly preferably 18 mm or more.
  • the protrusion 22 is formed, for example, in a conical shape, and is arranged spirally around the axis of the tip 12b of the shaft 12 from the base end to the tip of the cover 21.
  • the height of the protrusion 22 from the outer peripheral surface of the covering portion 21 decreases from the base end of the covering portion 21 toward the tip thereof.
  • the height of the protrusion 22 is set to, for example, 0.1 mm to 5.0 mm.
  • the soft portion 20 is formed of a resin material having a hardness lower than that of the synthetic resin material of the base material portion 10.
  • An elastomer can be adopted as the resin material, and as the elastomer, a styrene elastomer, a silicone, an olefin elastomer, a polyester elastomer or the like may be used.
  • the durometer hardness type A (JISK6253) of the elastomer is preferably 10 to 50, and more preferably 10 to 40. In this embodiment, the durometer hardness type A is 35.
  • the covering portion 21 has four first to fourth portions at the same positions on the front surface and the back surface of the interdental cleaning tool 1 at predetermined intervals along the longitudinal direction D2 of the interdental cleaning tool 1. Openings 23a to 23d are formed. As will be described later, the first to fourth openings 23a to 23d are formed by die holding pins. In the present embodiment, the first to fourth openings 23a to 23d are formed in a circular shape, for example. The first to fourth openings 23a to 23d expose the tip portion 12b of the shaft portion 12.
  • the first to fourth openings 23a to 23d are formed at positions of, for example, 1.2 mm, 5.6 mm, 10.5 mm and 15.5 mm from the distal end to the proximal end of the covering portion 21. There is.
  • First to fourth cuts 13a to 13d are formed on the tip portion 12b of the shaft portion 12 corresponding to the positions of the first to fourth openings 23a to 23d of the covering portion 21.
  • the first to fourth cuts 13a to 13d are formed only on the surface side of the interdental cleaning tool 1.
  • the first to fourth cuts 13a to 13d are formed, for example, in a shape crossing the tip portion 12b in a direction orthogonal to the axis of the tip portion 12b.
  • the cross section orthogonal to the direction in which the first to fourth cuts 13a to 13d extend is, for example, a semicircle.
  • the depth of the first to fourth cuts 13a to 13d from the outer peripheral surface of the tip portion 12b is specified to be 0.004 mm to 1.5 mm, for example. , More preferably 0.04 mm to 1 mm, and further preferably 0.4 mm to 0.5 mm.
  • the first to fourth openings 23a to 23d are formed so that the soft portion 20 extends in the longitudinal direction D2 with the first to fourth openings 23a to 23d as boundaries. It may be divided into five first to fifth cleaning areas 24a to 24e. As described above, since the diameter of the tip portion 12b of the shaft portion 12 increases toward the base end, the outer diameter of each of the cleaning regions 24a to 24e also increases from the first cleaning region 24a toward the fifth cleaning region 24e. .. Therefore, the first to fifth cleaning areas 24a to 24e are suitable for proper use according to the width between the teeth.
  • the size of the soft part 20 (cleaning part) of the interdental cleaning tool 1 is generally expressed in seven stages of SSSS, SSS, SS, S, M, L, and LL, and for example, the above first to fifth In the cleaning areas 24a to 24e, the first and second cleaning areas 24a and 24b are set to SSSS, the fifth cleaning area 24e is set to S, or the first and second cleaning areas 24a and 24b are set to S and the fifth cleaning area is set to S.
  • the size of 24e to LL in four steps, the user can easily adjust the size by himself.
  • the user folds and cuts the shaft portion 12 at the position of the third cut 13c, for example. be able to. That is, the cuts 13a to 13d form the "cutting portion" of the present invention.
  • the cut first to third cleaning regions 24a to 24c do not hit the tongue or gums of the user, so that the user can comfortably use the interdental cleaning tool 1.
  • one interdental cleaning tool 1 can clean both narrow and wide interdental spaces, so it is necessary to purchase an interdental cleaning tool having soft portions 20 of two different sizes, which is conventionally required. Disappear.
  • the first molds 40 and 41 are used for molding the base material portion 10.
  • a filling space 42 is formed in the first molds 40 and 41 in the shape of the outer shape of the base material portion 10.
  • the filling space 42 is filled with the molten synthetic resin material to mold the base material portion 10.
  • the first mold 40 is formed with a plurality of protrusions 43 in the shape of the first to fourth cuts 13a to 13d, and the protrusions 43 form the first to fourth protrusions on the base member 10. Cuts 13a to 13d are formed.
  • the base material part 10 is taken out from the first molds 40 and 41.
  • the molded base material portion 10 is placed in the filling space 52 of the second molds 50 and 51 which is shaped like the outer shape of the soft portion 20.
  • Each of the second molds 50 and 51 includes a plurality of pairs of holding pins 53 that are arranged in the filling space 52 so as to be movable back and forth in a direction orthogonal to the axis of the base material portion 10.
  • the holding pins 53 sandwich and hold the base material portion 10 from the front surface and the back surface.
  • the position of each holding pin 53 coincides with the position of the first to fourth cuts 13a to 13d.
  • the interdental cleaning tool 1 is molded.
  • the interdental cleaning tool 1 is then taken out from the second molds 50 and 51. Since the holding pin 53 is pressed against the base material portion 10 when the elastomer is filled, the first to fourth opening portions 23a, which are traces of the holding pin 53 being arranged on the covering portion 21 of the soft portion 20, 23d is formed. Further, since the position of the holding pin 53 coincides with the position of the first to fourth cuts 13a to 13d, the first to fourth openings 23a to 23d expose the first to fourth cuts 13a to 13d.
  • the cross section of the first to fourth notches 13a to 13d is most preferably the above-described semicircular shape that is hard to break when the interdental cleaning tool 1 is used because stress is dispersed.
  • it may be formed in, for example, a triangle or a pentagon.
  • the number and positions of the first to fourth cuts 13a to 13d may be changed as appropriate, and the cut 13 may be provided at only one place on the shaft portion 12, for example.
  • the notch 13 is formed only on the surface side of the interdental cleaning tool 1, but the notch 13 is formed at the same position along the longitudinal direction D2 of the tip portion 12b of the shaft portion 12 in the tip portion 12b. It may be formed by a pair of notches facing each other on the front surface side and the back surface side. On the other hand, the notch 13 may be formed around the axis of the shaft portion 12 over the entire circumference of the tip portion 12b. The notch 13 is preferably formed only on one surface of the interdental cleaning tool 1 or over the entire circumference of the tip portion 12b, but the tip portion 12b needs to be hard to break to some extent in cleaning between teeth. Most preferably, it is formed on one side of the interdental cleaning tool 1.
  • the notch 13 is formed only on the front surface side of the interdental cleaning tool 1, that is, on the same surface side as the widely spreading surface of the base portion 11 of the base material portion 10, but FIG. It may be formed on the same side as the side surface of the base portion 11 shown in FIG. In other words, the notch 13 of the above-described embodiment may be formed at a position shifted by 90 degrees around the shaft center of the shaft portion 11.
  • the opening 23 is formed in the covering portion 21 corresponding to the position of the notch 13, but the opening 23 does not necessarily have to be formed. That is, the notch 13 may be completely covered with the covering portion 21, and the covering portion 21 may have such a thickness that the shaft portion 12 can be reliably cut at the position of the notch 13. .. On the other hand, at the position where the notch 13 of the shaft portion 12 is formed, the opening portion (notch) 23 may be formed around the axis of the shaft portion 12 over the entire circumference of the covering portion 21.
  • a stepped portion of the shaft portion 12 formed by gradually reducing the diameter of the tip portion 12b of the shaft portion 12 may be formed as a cut portion. That is, the tip portion 12b has a plurality of regions having a uniform diameter over a predetermined length, and a step formed by the diameter of the region gradually decreasing toward the tip of the tip portion 12b. You may form as a cutting part.

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  • 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)
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Abstract

[Problem] To provide an interdental cleaning tool which a user can comfortably use. [Solution] This interdental cleaning tool 1 is provided with: a base material part 10 having a base section 11 and a shaft section 12 that extends from the base section 11 and has a diameter decreasing toward the tip thereof; and a soft part 20 that covers at least a portion of the shaft section 12, wherein cut parts 13a-13d for enabling the cutting of a shaft section 13 are provided.

Description

歯間清掃具Interdental cleaning tool

 本発明は、歯間清掃具に関する。

The present invention relates to an interdental cleaning tool.

 従来、歯間を清掃する歯間清掃具が知られている。例えば特許文献1に開示された歯間清掃具は、合成樹脂から形成された基材部と、エラストマーから形成された軟質部と、を備えている。基材部は、持ち手としての扁平なハンドル部と、ハンドル部の先端から延びる細長い芯基材部と、を備えている。軟質部は、芯基材部の少なくとも一部を被覆する被覆部と、被覆部から突出する複数の突起部と、を備えている。

Conventionally, an interdental cleaning tool for cleaning an interdental space has been known. For example, the interdental cleaning tool disclosed in Patent Document 1 includes a base material part made of synthetic resin and a soft part made of elastomer. The base material portion includes a flat handle portion serving as a handle, and an elongated core base material portion extending from the tip of the handle portion. The soft part includes a covering part that covers at least a part of the core base material part, and a plurality of projecting parts that project from the covering part.

国際公開第2013/176297号International Publication No. 2013/176297

 芯基材部は、その先端に向かうにつれて縮径するテーパ形状に形成されており、従って、軟質部の外形もその先端に向かうにつれて縮径している。比較的広い歯間に歯間清掃具を挿入した場合、歯間の清掃には軟質部の比較的太い基端領域が使用されるので、軟質部の比較的細い先端領域は歯間を通り過ぎて舌や歯茎に突き当たることがある。先端部が舌や歯茎に当たることは歯間清掃具の使用者には非常に不快であるのみならず、出血を伴ったり、傷が原因で口内炎を引き起こすこともある。

The core base material portion is formed in a taper shape whose diameter decreases toward its tip, and therefore the outer shape of the soft portion also decreases in diameter toward its tip. When an interdental cleaning tool is inserted between relatively wide teeth, the relatively thick proximal end region of the soft part is used for cleaning between the teeth, so the relatively thin tip region of the soft part passes between the teeth. May hit the tongue or gums. Hitting the tongue or gums with the tip is not only very uncomfortable for the user of the interdental cleaning tool, but it can also cause bleeding and can cause stomatitis due to the wound.

 そこで、本発明は、使用者が快適に使用することができる歯間清掃具を提供することを目的とする。

Then, this invention aims at providing the interdental cleaning tool which a user can use comfortably.

 本発明の一態様に係る歯間清掃具は、基部と、基部から延在し、その先端に向かって縮径する軸部と、を有する基材部と、軸部の少なくとも一部を被覆する軟質部と、を備え、軸部の切断を可能にする切断部が設けられている。

An interdental cleaning tool according to an aspect of the present invention covers at least a part of a base portion having a base portion and a shaft portion extending from the base portion and having a diameter reduced toward a tip thereof. And a soft part, and a cutting part for cutting the shaft part is provided.

 この態様によれば、軸部はその先端に向かって縮径するので、比較的狭い歯間の清掃に軸部の先端側が使用され、比較的広い歯間の清掃にあたって軸部の基端側が使用される。この歯間清掃具には、軸部の切断を可能にする切断部が形成されているので、例えば軸部の先端側の一部を切断することによって、使用者は軸部の基端側の一部のみを清掃に使用することができる。その結果、軸部の先端側の一部が使用者の舌や歯茎に突き当たることを防止することができる。使用者は歯間清掃具を快適に使用することができる。

According to this aspect, since the shaft portion is reduced in diameter toward the tip thereof, the tip end side of the shaft portion is used for cleaning between the relatively narrow teeth, and the base end side of the shaft portion is used for cleaning between the relatively wide teeth. To be done. Since the interdental cleaning tool is formed with a cutting portion that enables cutting of the shaft portion, for example, by cutting a part of the tip end side of the shaft portion, the user can remove the base end side of the shaft portion. Only part can be used for cleaning. As a result, it is possible to prevent a part of the tip end side of the shaft portion from hitting the tongue and gums of the user. The user can comfortably use the interdental cleaning tool.

 上記態様において、切断部は、軸部に形成された切れ込みであってもよく、この場合、切れ込みは歯間清掃具の外面に露出していてもよい。さらに、切断部は、軸部の径の減少によって形成された段差であってもよい。

In the above aspect, the cutting portion may be a notch formed in the shaft portion, and in this case, the notch may be exposed on the outer surface of the interdental cleaning tool. Further, the cut portion may be a step formed by reducing the diameter of the shaft portion.

 本発明によれば、使用者が快適に使用することができる歯間清掃具を提供することができる。

ADVANTAGE OF THE INVENTION According to this invention, the interdental cleaning tool which a user can use comfortably can be provided.

本発明の一実施形態に係る歯間清掃具の構成を概略的に示す正面図である。It is a front view which shows roughly the structure of the interdental cleaning tool which concerns on one Embodiment of this invention. 本発明の一実施形態に係る歯間清掃具の構成を概略的に示す側面図である。It is a side view which shows roughly the structure of the interdental cleaning tool which concerns on one Embodiment of this invention. 図1の3-3線に沿った端面図である。FIG. 3 is an end view taken along line 3-3 of FIG. 1. 基材部を形成する工程を示す断面図である。It is sectional drawing which shows the process of forming a base material part. 清掃部を形成する工程を示す断面図である。It is sectional drawing which shows the process of forming a cleaning part. 図3に対応し、一変形例に係る歯間清掃具の構成を概略的に示す端面図である。It is an end view which corresponds to FIG. 3 and which shows schematically the structure of the interdental cleaning tool which concerns on one modification.

 添付図面を参照して本発明の好適な実施形態について説明する。図1及び図2に示されるように、本発明の一実施形態に係る歯間清掃具1は、基材部10と、基材部10の少なくとも一部を被覆する軟質部20と、を備えている。この歯間清掃具1は、例えば基材部10に形成された接続部(図示せず)によって歯間清掃具1の短手方向D1に例えば10個の歯間清掃具1が並列に接続されて形成された接続体から個別に切り離されたものである。

A preferred embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 1 and 2, an interdental cleaning tool 1 according to an embodiment of the present invention includes a base material portion 10 and a soft portion 20 that covers at least a part of the base material portion 10. ing. In this interdental cleaning tool 1, for example, ten interdental cleaning tools 1 are connected in parallel in the lateral direction D1 of the interdental cleaning tool 1 by means of a connecting portion (not shown) formed in the base material portion 10. It is individually separated from the formed connecting body.

 基材部10は、使用者が把持する基部11と、基部11の先端から歯間清掃具1の短手方向D1に直交する長手方向D2に延在して、使用者の歯間に挿入される軸部12と、を備えている。なお、本明細書において、基部11から軸部12に向かう側を先端側とし、軸部12から基部11に向かう側を基端側とする。

The base material part 10 extends in a longitudinal direction D2 orthogonal to the lateral direction D1 of the interdental cleaning tool 1 from the tip of the base part 11 that is gripped by the user, and is inserted between the teeth of the user. And a shaft portion 12 that is provided. In this specification, the side from the base portion 11 toward the shaft portion 12 is referred to as the tip end side, and the side from the shaft portion 12 toward the base portion 11 is referred to as the base end side.

 基部11は、例えば扁平に広がる板状に形成されており、本実施形態では、例えば平たい直方体形状に形成されているが、使用者が把持することができる形状であれば、その他の形状に形成されてもよい。

The base 11 is formed in, for example, a flat plate shape, and is formed in, for example, a flat rectangular parallelepiped shape in the present embodiment, but may be formed in any other shape as long as it can be grasped by a user. May be done.

 軸部12は、基部11の一端である先端から長手方向D2に延在している。軸部12は、軸部12の先端に向かうにつれて短手方向D1に沿って規定される軸部12の幅を減少させる扁平な板状の移行部12aと、移行部12aの先端から軸部12の先端まで延びる例えば円柱状の先端部12bと、を備える。先端部12bは、その基端から先端に向かうにつれて縮径するテーパ形状に形成されている。

The shaft portion 12 extends in the longitudinal direction D2 from a tip that is one end of the base portion 11. The shaft portion 12 has a flat plate-shaped transition portion 12a that reduces the width of the shaft portion 12 defined along the lateral direction D1 as it goes toward the tip of the shaft portion 12, and the shaft portion 12 from the tip of the transition portion 12a. And a columnar tip portion 12b extending to the tip of the column. The tip portion 12b is formed in a tapered shape whose diameter decreases from the base end toward the tip.

 本実施形態の歯間清掃具1において、長手方向D2に規定される基材部10の長さL1は例えば45mm~55mmに設定されている。短手方向D1に規定される基部11の幅W1は例えば3mm~10mmに設定されており、短手方向D1及び長手方向D2に直交する方向D3に規定される基部11の厚さT1は例えば0.5mm~10mmに設定されている。先端部12bの直径は例えば0.6mm~3.0mmに設定されており、一例では、先端部12bの直径は、例えば先端部12bの先端の0.3mmから基端の20.5mmまで徐々に増大する。

In the interdental cleaning tool 1 of the present embodiment, the length L1 of the base material portion 10 defined in the longitudinal direction D2 is set to, for example, 45 mm to 55 mm. The width W1 of the base 11 defined in the lateral direction D1 is set to, for example, 3 mm to 10 mm, and the thickness T1 of the base 11 defined in the direction D3 orthogonal to the lateral direction D1 and the longitudinal direction D2 is 0, for example. It is set to 0.5 mm to 10 mm. The diameter of the tip portion 12b is set to, for example, 0.6 mm to 3.0 mm, and in one example, the diameter of the tip portion 12b is gradually increased from 0.3 mm at the tip of the tip portion 12b to 20.5 mm at the base end. Increase.

 基材部10は例えば合成樹脂材料から成形される。合成樹脂材料としては、例えばポリプロピレン、ポリエチレン、ABS(アクリロニトリル・ブタジエン・スチレン)、ポリブチレンテレフタレート、ポリカーボネート、ポリエチレンテレフタレート、ポリスチレン、ポリアセタール、ポリアミド等を採用することができる。また、合成樹脂材料には、例えば1~30重量%程度の割合でガラス繊維等の繊維素材が添加されてもよい。

The base material portion 10 is formed of, for example, a synthetic resin material. As the synthetic resin material, for example, polypropylene, polyethylene, ABS (acrylonitrile butadiene styrene), polybutylene terephthalate, polycarbonate, polyethylene terephthalate, polystyrene, polyacetal, polyamide or the like can be used. Further, a fiber material such as glass fiber may be added to the synthetic resin material in a ratio of, for example, about 1 to 30% by weight.

 軟質部20は、軸部12の先端部12bの基端から先端までその外周面のほぼ全体を被覆する被覆部21と、被覆部21から突き出る複数の突起部22と、を備えている。被覆部21は、長手方向D2に規定されるその基端から先端までの長さは例えば10mm~25mmに設定されている。被覆部21は、D2方向の同じ位置では均一な厚さで形成されており、その厚さは例えば0.1mm~2.5mmに設定されている。なお、上述した本発明の課題は、被覆部21が長いほど生じやすく、また一方で、歯間清掃具は様々なサイズを有していることから、長手方向D2に規定される被覆部21の長さは好ましくは15mm以上、より好ましくは16mm以上、特に好ましくは18mm以上である。

The soft portion 20 includes a covering portion 21 that covers almost the entire outer peripheral surface of the tip portion 12b of the shaft portion 12 from the base end to the tip end, and a plurality of protrusion portions 22 that protrude from the covering portion 21. The length of the covering portion 21 from the base end to the tip defined in the longitudinal direction D2 is set to, for example, 10 mm to 25 mm. The covering portion 21 is formed to have a uniform thickness at the same position in the D2 direction, and the thickness is set to, for example, 0.1 mm to 2.5 mm. The above-described problem of the present invention is more likely to occur as the covering portion 21 is longer, and, on the other hand, since the interdental cleaning tool has various sizes, the covering portion 21 of the covering portion 21 defined in the longitudinal direction D2 is formed. The length is preferably 15 mm or more, more preferably 16 mm or more, particularly preferably 18 mm or more.

 突起部22は、例えば円錐形状に形成されており、被覆部21の基端から先端まで、軸部12の先端部12bの軸心周りに螺旋状に配置されている。被覆部21の外周面からの突起部22の高さは、被覆部21の基端から先端に向かうにつれて減少する。突起部22の高さは例えば0.1mm~5.0mmに設定されている。

The protrusion 22 is formed, for example, in a conical shape, and is arranged spirally around the axis of the tip 12b of the shaft 12 from the base end to the tip of the cover 21. The height of the protrusion 22 from the outer peripheral surface of the covering portion 21 decreases from the base end of the covering portion 21 toward the tip thereof. The height of the protrusion 22 is set to, for example, 0.1 mm to 5.0 mm.

 軟質部20は、基材部10の合成樹脂材料の硬度よりも低い硬度を有する樹脂材料から形成される。樹脂材料としてはエラストマーを採用することができ、エラストマーとしては、スチレン系エラストマー、シリコーン、オレフィン系エラストマー、ポリエステル系エラストマー等が用いられてもよい。エラストマーの硬度は、デュロメータ硬さタイプA(JISK6253)が、10~50であることが好ましく、10~40であることがより好ましい。本実施形態では、デュロメータ硬さタイプAは35である。

The soft portion 20 is formed of a resin material having a hardness lower than that of the synthetic resin material of the base material portion 10. An elastomer can be adopted as the resin material, and as the elastomer, a styrene elastomer, a silicone, an olefin elastomer, a polyester elastomer or the like may be used. The durometer hardness type A (JISK6253) of the elastomer is preferably 10 to 50, and more preferably 10 to 40. In this embodiment, the durometer hardness type A is 35.

 図3を併せて参照すると、被覆部21には、歯間清掃具1の表面及び裏面の同じ位置に歯間清掃具1の長手方向D2に沿って所定の間隔で4つの第1~第4開口部23a~23dが形成されている。後述するように、この第1~第4開口部23a~23dは金型の保持ピンによって形成される。本実施形態では、第1~第4開口部23a~23dは例えば円形に形成されている。第1~第4開口部23a~23dは軸部12の先端部12bを露出させる。本実施形態では、被覆部21の先端から基端に向かって例えば1.2mm、5.6mm、10.5mm及び15.5mmの位置にそれぞれ第1~第4開口部23a~23dが形成されている。

Referring also to FIG. 3, the covering portion 21 has four first to fourth portions at the same positions on the front surface and the back surface of the interdental cleaning tool 1 at predetermined intervals along the longitudinal direction D2 of the interdental cleaning tool 1. Openings 23a to 23d are formed. As will be described later, the first to fourth openings 23a to 23d are formed by die holding pins. In the present embodiment, the first to fourth openings 23a to 23d are formed in a circular shape, for example. The first to fourth openings 23a to 23d expose the tip portion 12b of the shaft portion 12. In the present embodiment, the first to fourth openings 23a to 23d are formed at positions of, for example, 1.2 mm, 5.6 mm, 10.5 mm and 15.5 mm from the distal end to the proximal end of the covering portion 21. There is.

 軸部12の先端部12bには、被覆部21の第1~第4開口部23a~23dの位置に対応して第1~第4切れ込み13a~13dが形成されている。本実施形態では、第1~第4切れ込み13a~13dは歯間清掃具1の表面側にのみ形成されている。第1~第4切れ込み13a~13dは、例えば先端部12bの軸心に対して直交する方向に先端部12bを横断する形状に形成されている。第1~第4切れ込み13a~13dが延在する方向に直交する断面は例えば半円形である。先端部12bの直径が0.6mm~3.0mmである場合、先端部12bの外周面からの第1~第4切れ込み13a~13dの深さは、例えば0.004mm~1.5mmに規定され、より好ましくは0.04mm~1mm、さらに好ましくは0.4mm~0.5mmに規定されることが好ましい。

First to fourth cuts 13a to 13d are formed on the tip portion 12b of the shaft portion 12 corresponding to the positions of the first to fourth openings 23a to 23d of the covering portion 21. In the present embodiment, the first to fourth cuts 13a to 13d are formed only on the surface side of the interdental cleaning tool 1. The first to fourth cuts 13a to 13d are formed, for example, in a shape crossing the tip portion 12b in a direction orthogonal to the axis of the tip portion 12b. The cross section orthogonal to the direction in which the first to fourth cuts 13a to 13d extend is, for example, a semicircle. When the diameter of the tip portion 12b is 0.6 mm to 3.0 mm, the depth of the first to fourth cuts 13a to 13d from the outer peripheral surface of the tip portion 12b is specified to be 0.004 mm to 1.5 mm, for example. , More preferably 0.04 mm to 1 mm, and further preferably 0.4 mm to 0.5 mm.

 図1~図3から明らかなように、第1~第4開口部23a~23dが形成されることによって、軟質部20は、第1~第4開口部23a~23dを境界として長手方向D2に沿って5つの第1~第5清掃領域24a~24eに分割されることができる。上述したように、軸部12の先端部12bの直径は基端に向かうにつれて増大するため、各清掃領域24a~24eの外径も第1清掃領域24aから第5清掃領域24eに向かうにつれて増大する。従って、各第1~第5清掃領域24a~24eは歯間の広さに応じて使い分けることに適している。歯間清掃具1の軟質部20(清掃部)のサイズは、一般的にSSSS、SSS、SS、S、M、L、LLの7段階で表されており、例えば上記の第1~第5清掃領域24a~24eにおいて、第1及び第2清掃領域24a、24bをSSSS、第5清掃領域24eをSとした4段階、あるいは第1及び第2清掃領域24a、24bをS、第5清掃領域24eをLLとした4段階のサイズに合わせることで、使用者が自身でサイズを調整し易くすることも可能となる。

As is clear from FIGS. 1 to 3, the first to fourth openings 23a to 23d are formed so that the soft portion 20 extends in the longitudinal direction D2 with the first to fourth openings 23a to 23d as boundaries. It may be divided into five first to fifth cleaning areas 24a to 24e. As described above, since the diameter of the tip portion 12b of the shaft portion 12 increases toward the base end, the outer diameter of each of the cleaning regions 24a to 24e also increases from the first cleaning region 24a toward the fifth cleaning region 24e. .. Therefore, the first to fifth cleaning areas 24a to 24e are suitable for proper use according to the width between the teeth. The size of the soft part 20 (cleaning part) of the interdental cleaning tool 1 is generally expressed in seven stages of SSSS, SSS, SS, S, M, L, and LL, and for example, the above first to fifth In the cleaning areas 24a to 24e, the first and second cleaning areas 24a and 24b are set to SSSS, the fifth cleaning area 24e is set to S, or the first and second cleaning areas 24a and 24b are set to S and the fifth cleaning area is set to S. By adjusting the size of 24e to LL in four steps, the user can easily adjust the size by himself.

 具体的には、例えば第1~第3清掃領域24a~24cを比較的狭い歯間の清掃に最初に使用した後、使用者は例えば第3切れ込み13cの位置で軸部12を折って切断することができる。すなわち、切れ込み13a~13dは本発明の「切断部」を形成する。その結果、使用者は、必要な第4及び第5清掃領域24d、24eのみで比較的広い歯間を清掃することができる。一方で、切断された第1~第3清掃領域24a~24cが使用者の舌や歯茎に突き当たることもないので、使用者は歯間清掃具1を快適に使用することができる。また、例えば1本の歯間清掃具1で狭い歯間も広い歯間も清掃することができるので、従来必要であった異なる2つのサイズの軟質部20を有する歯間清掃具の購入も必要なくなる。

Specifically, for example, after first using the first to third cleaning regions 24a to 24c for cleaning a relatively narrow interdental space, the user folds and cuts the shaft portion 12 at the position of the third cut 13c, for example. be able to. That is, the cuts 13a to 13d form the "cutting portion" of the present invention. As a result, the user can clean a relatively wide interdental space only with the necessary fourth and fifth cleaning regions 24d and 24e. On the other hand, the cut first to third cleaning regions 24a to 24c do not hit the tongue or gums of the user, so that the user can comfortably use the interdental cleaning tool 1. Further, for example, one interdental cleaning tool 1 can clean both narrow and wide interdental spaces, so it is necessary to purchase an interdental cleaning tool having soft portions 20 of two different sizes, which is conventionally required. Disappear.

 次に、歯間清掃具1の製造方法について以下に説明する。まず、図4に示されるように、基材部10の成形にあたって第1金型40、41が使用される。第1金型40、41には、基材部10の外形を象った充填空間42が形成される。この充填空間42には溶融した合成樹脂材料が充填されて基材部10が成形される。第1金型40には、第1~第4切れ込み13a~13dの外形を象った複数の突部43が形成されており、この突部43によって基材部10には第1~第4切れ込み13a~13dが形成される。その後、基材部10は第1金型40、41から取り出される。

Next, a method for manufacturing the interdental cleaning tool 1 will be described below. First, as shown in FIG. 4, the first molds 40 and 41 are used for molding the base material portion 10. A filling space 42 is formed in the first molds 40 and 41 in the shape of the outer shape of the base material portion 10. The filling space 42 is filled with the molten synthetic resin material to mold the base material portion 10. The first mold 40 is formed with a plurality of protrusions 43 in the shape of the first to fourth cuts 13a to 13d, and the protrusions 43 form the first to fourth protrusions on the base member 10. Cuts 13a to 13d are formed. Then, the base material part 10 is taken out from the first molds 40 and 41.

 続いて、図5に示されるように、成形された基材部10は、軟質部20の外形を象った第2金型50、51の充填空間52内に配置される。第2金型50、51は、それぞれ、基材部10の軸心に直交する方向に充填空間52内に進退自在に配置される複数対の保持ピン53を備えている。各対の保持ピン53、53の先端が基材部10に押し当てられる結果、保持ピン53は基材部10を表面及び裏面から挟み込んで保持する。本実施形態では、各保持ピン53の位置は第1~第4切れ込み13a~13dの位置に一致している。

Subsequently, as shown in FIG. 5, the molded base material portion 10 is placed in the filling space 52 of the second molds 50 and 51 which is shaped like the outer shape of the soft portion 20. Each of the second molds 50 and 51 includes a plurality of pairs of holding pins 53 that are arranged in the filling space 52 so as to be movable back and forth in a direction orthogonal to the axis of the base material portion 10. As a result of the tips of the holding pins 53, 53 of each pair being pressed against the base material portion 10, the holding pins 53 sandwich and hold the base material portion 10 from the front surface and the back surface. In the present embodiment, the position of each holding pin 53 coincides with the position of the first to fourth cuts 13a to 13d.

 第2金型50、51の充填空間52には、例えば基材部10の先端に対向する位置に形成されたゲート54から溶融したエラストマーが充填され軟質部20が成形される。こうして歯間清掃具1が成形される。歯間清掃具1は、その後、第2金型50、51から取り出される。エラストマーの充填時に保持ピン53が基材部10に押し当てられているので、軟質部20の被覆部21には、保持ピン53が配置されていた跡である第1~第4開口部23a~23dが形成される。また、保持ピン53の位置が第1~第4切れ込み13a~13dの位置に一致するので、第1~第4開口部23a~23dは第1~第4切れ込み13a~13dを露出させる。

In the filling space 52 of the second molds 50 and 51, for example, a melted elastomer is filled from a gate 54 formed at a position facing the tip of the base material portion 10 to mold the soft portion 20. In this way, the interdental cleaning tool 1 is molded. The interdental cleaning tool 1 is then taken out from the second molds 50 and 51. Since the holding pin 53 is pressed against the base material portion 10 when the elastomer is filled, the first to fourth opening portions 23a, which are traces of the holding pin 53 being arranged on the covering portion 21 of the soft portion 20, 23d is formed. Further, since the position of the holding pin 53 coincides with the position of the first to fourth cuts 13a to 13d, the first to fourth openings 23a to 23d expose the first to fourth cuts 13a to 13d.

 以上のような歯間清掃具1では、第1~第4切れ込み13a~13dの断面は、応力が分散されるので歯間清掃具1の使用時に折れにくい上述の半円形であることが最も好ましいが、図6に示されるように、例えば三角形や五角形に形成されてもよい。また、第1~第4切れ込み13a~13dの数や位置については適宜変更されてもよく、切れ込み13は例えば軸部12に一カ所のみ設けられてもよい。

In the interdental cleaning tool 1 as described above, the cross section of the first to fourth notches 13a to 13d is most preferably the above-described semicircular shape that is hard to break when the interdental cleaning tool 1 is used because stress is dispersed. However, as shown in FIG. 6, it may be formed in, for example, a triangle or a pentagon. Further, the number and positions of the first to fourth cuts 13a to 13d may be changed as appropriate, and the cut 13 may be provided at only one place on the shaft portion 12, for example.

 上述の実施形態では、切れ込み13は歯間清掃具1の表面側にのみ形成されたが、切れ込み13は、軸部12の先端部12bの長手方向D2に沿った同一の位置で先端部12bの表面側と裏面側とに互いに対向した1対の切れ込みから形成されてもよい。一方で、切れ込み13は、軸部12の軸心周りに先端部12bの全周にわたって形成されてもよい。切れ込み13は、歯間清掃具1の片面にのみ又は先端部12bの全周にわたって形成されることが好ましいが、歯間の清掃にあたって先端部12bにもある程度の折れにくさが必要であるため、歯間清掃具1の片面に形成されることが最も好ましい。

In the above-described embodiment, the notch 13 is formed only on the surface side of the interdental cleaning tool 1, but the notch 13 is formed at the same position along the longitudinal direction D2 of the tip portion 12b of the shaft portion 12 in the tip portion 12b. It may be formed by a pair of notches facing each other on the front surface side and the back surface side. On the other hand, the notch 13 may be formed around the axis of the shaft portion 12 over the entire circumference of the tip portion 12b. The notch 13 is preferably formed only on one surface of the interdental cleaning tool 1 or over the entire circumference of the tip portion 12b, but the tip portion 12b needs to be hard to break to some extent in cleaning between teeth. Most preferably, it is formed on one side of the interdental cleaning tool 1.

 また、上述の実施形態では、切れ込み13は、歯間清掃具1の表面側のみ、すなわち、基材部10の基部11の大きく広がる面と同一の面側にのみ形成されているが、図2に示す基部11の側面と同一の面側に形成されてもよい。言い換えれば、上述の実施形態の切れ込み13が、軸部11の軸心周りに90度ずれた位置に形成されてもよい。

Further, in the above-described embodiment, the notch 13 is formed only on the front surface side of the interdental cleaning tool 1, that is, on the same surface side as the widely spreading surface of the base portion 11 of the base material portion 10, but FIG. It may be formed on the same side as the side surface of the base portion 11 shown in FIG. In other words, the notch 13 of the above-described embodiment may be formed at a position shifted by 90 degrees around the shaft center of the shaft portion 11.

 上述の実施形態では、切れ込み13の位置に対応して被覆部21には開口部23が形成されているが、この開口部23は必ずしも形成されてなくてもよい。すなわち、切れ込み13は被覆部21で完全に被覆されていてもよく、被覆部21は、切れ込み13の位置で軸部12を確実に切断することができる程度の厚さを有していればよい。一方で、軸部12の切れ込み13が形成された位置では、軸部12の軸心周りに被覆部21の全周にわたって開口部(切れ込み)23が形成されてもよい。

In the above-mentioned embodiment, the opening 23 is formed in the covering portion 21 corresponding to the position of the notch 13, but the opening 23 does not necessarily have to be formed. That is, the notch 13 may be completely covered with the covering portion 21, and the covering portion 21 may have such a thickness that the shaft portion 12 can be reliably cut at the position of the notch 13. .. On the other hand, at the position where the notch 13 of the shaft portion 12 is formed, the opening portion (notch) 23 may be formed around the axis of the shaft portion 12 over the entire circumference of the covering portion 21.

 さらに、上述の実施形態では、切れ込み13に代えて、軸部12の先端部12bの直径が段階的に減少することによって形成される軸部12の段差を切断部として形成してもよい。すなわち、先端部12bが、所定の長さにわたって均一な直径を有する領域を複数有しており、先端部12bの先端に向かって当該領域の直径が段階的に減少することによって形成される段差を切断部として形成してもよい。

Further, in the above-described embodiment, instead of the notch 13, a stepped portion of the shaft portion 12 formed by gradually reducing the diameter of the tip portion 12b of the shaft portion 12 may be formed as a cut portion. That is, the tip portion 12b has a plurality of regions having a uniform diameter over a predetermined length, and a step formed by the diameter of the region gradually decreasing toward the tip of the tip portion 12b. You may form as a cutting part.

 以上説明した実施形態は、本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。実施形態が備える各要素並びにその配置、材料、条件、形状及びサイズ等は、例示したものに限定されるわけではなく適宜変更することができる。また、異なる実施形態で示した構成同士を部分的に置換し又は組み合わせることが可能である。

The embodiments described above are for facilitating the understanding of the present invention and are not for limiting the interpretation of the present invention. Each element included in the embodiment and its arrangement, material, condition, shape, size and the like are not limited to the exemplified ones but can be changed as appropriate. Further, the configurations shown in different embodiments can be partially replaced or combined.

 1…歯間清掃具、10…基材部、11…基部、12…軸部、13…切れ込み、20…軟質部、21…被覆部、22…突起部

DESCRIPTION OF SYMBOLS 1... Interdental cleaning tool, 10... Base material part, 11... Base part, 12... Shaft part, 13... Notch, 20... Soft part, 21... Cover part, 22... Protrusion part

Claims (4)


  1.  基部と、前記基部から延在し、その先端に向かって縮径する軸部と、を有する基材部と、

     前記軸部の少なくとも一部を被覆する軟質部と、を備え、

     前記軸部の切断を可能にする切断部が設けられている、歯間清掃具。

    A base portion having a base portion and a shaft portion extending from the base portion and having a diameter reduced toward the tip thereof;

    A soft portion that covers at least a part of the shaft portion,

    An interdental cleaning tool provided with a cutting portion that enables cutting of the shaft portion.

  2.  前記切断部は、前記軸部に形成された切れ込みである、請求項1に記載の歯間清掃具。

    The interdental cleaning tool according to claim 1, wherein the cutting portion is a notch formed in the shaft portion.

  3.  前記切れ込みは前記歯間清掃具の外面に露出している、請求項2に記載の歯間清掃具。

    The interdental cleaning tool according to claim 2, wherein the notch is exposed on an outer surface of the interdental cleaning tool.

  4.  前記切断部は、前記軸部の径の減少によって形成された段差である、請求項1に記載の歯間清掃具。

    The interdental cleaning tool according to claim 1, wherein the cutting portion is a step formed by reducing the diameter of the shaft portion.
PCT/JP2019/045063 2018-12-28 2019-11-18 Interdental cleaning tool WO2020137248A1 (en)

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JP2018248338A JP7369521B2 (en) 2018-12-28 2018-12-28 Interdental cleaning tool

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3028879U (en) * 1996-03-11 1996-09-13 高 長谷川 Toothpick with protrusions
JP2017000762A (en) * 2015-06-08 2017-01-05 サンスター スイス エスエー Manufacturing method of interdental cleaning tool

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3028879U (en) * 1996-03-11 1996-09-13 高 長谷川 Toothpick with protrusions
JP2017000762A (en) * 2015-06-08 2017-01-05 サンスター スイス エスエー Manufacturing method of interdental cleaning tool

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