JP7461656B2 - toothbrush - Google Patents
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- JP7461656B2 JP7461656B2 JP2021166409A JP2021166409A JP7461656B2 JP 7461656 B2 JP7461656 B2 JP 7461656B2 JP 2021166409 A JP2021166409 A JP 2021166409A JP 2021166409 A JP2021166409 A JP 2021166409A JP 7461656 B2 JP7461656 B2 JP 7461656B2
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- 230000001680 brushing effect Effects 0.000 claims description 43
- 230000003014 reinforcing effect Effects 0.000 claims description 30
- 238000004140 cleaning Methods 0.000 claims description 8
- 210000003128 head Anatomy 0.000 description 34
- 210000000214 mouth Anatomy 0.000 description 15
- 230000002787 reinforcement Effects 0.000 description 8
- 238000005452 bending Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000002513 implantation Methods 0.000 description 4
- 210000004513 dentition Anatomy 0.000 description 3
- 230000036346 tooth eruption Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- -1 polybutylene terephthalate Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Brushes (AREA)
Description
本発明は、歯ブラシ、特に、奥歯の磨き易さを向上させるように構成された歯ブラシに関する。 The present invention relates to a toothbrush, and in particular to a toothbrush designed to improve the ease of brushing molars.
上記歯ブラシとして、例えば、特許文献１に開示されているような、厚みが薄い小型のヘッド（歯ブラシヘッド部）を備えた歯ブラシが知られている。 As the above-mentioned toothbrush, for example, a toothbrush with a thin and small head (toothbrush head portion) is known, as disclosed in Patent Document 1.
かかる歯ブラシによれば、歯ブラシヘッド部が小型であるから、歯ブラシの先端側を口に挿し込んだ際に歯ブラシヘッド部が奥歯の手前側の歯等に干渉し難くなるため、歯ブラシヘッド部が奥歯に届き易くなり、毛束が奥歯に当たり易くなる。 With this toothbrush, the toothbrush head is small, so when the tip of the toothbrush is inserted into the mouth, the toothbrush head is less likely to interfere with the teeth in front of the back teeth, making it easier for the toothbrush head to reach the back teeth and for the bristles to touch the back teeth.
このように、上記構成の歯ブラシは、奥歯への毛束の当て易さを高めることで、奥歯の磨き易さを向上させることができるようになっている。 In this way, the toothbrush configured as described above can improve the ease of brushing the molars by making it easier to place the bristles on the molars.
ところで、上記従来の歯ブラシにおいて、歯ブラシヘッド部は、厚みを薄くしている分剛性が低くなっているため、毛束を歯に押し付けた際に歯ブラシヘッド部がネックに対して外側に反るようにして撓んでしまうことがある。 However, in the conventional toothbrushes described above, the toothbrush head has a reduced stiffness due to its thinness, so when the bristles are pressed against the teeth, the toothbrush head may bend outward relative to the neck.
この場合、使用者が歯ブラシに込めた力は、毛束に伝わる前に歯ブラシヘッド部の撓みによって減少してしまうため、毛束が奥歯に当たっていても、奥歯の汚れを落とせないことがある。 In this case, the force applied by the user to the toothbrush is reduced by the bending of the toothbrush head before it is transmitted to the bristles, so even if the bristles are touching the back teeth, they may not be able to clean the teeth.
そこで、本発明は、かかる実情に鑑み、奥歯をしっかりと磨くことができる歯ブラシの提供を課題とする。 In light of this situation, the present invention aims to provide a toothbrush that can thoroughly brush the back teeth.
本発明の歯ブラシは、
棒状のハンドル部と、
ハンドル部の長手方向における前端から延出するネック部と、
該ネック部の長手方向における前端につながる板状のヘッド部と、
前後方向で並ぶようにして該ヘッド部における厚み方向内側の植毛面に立設された複数の毛束によって構成される刷掃部と、
前記ネック部の前記前端から、前記ヘッド部における厚み方向外側の背面の基端側に重なるようにして延出する補強部と、を備え、
前記ヘッド部は、厚みが２～４ｍｍに設定され、且つ横幅が前記ハンドル部の横幅よりも小さくなるように設定されるように形成され、
前記ネック部は、厚みと横幅が前記ハンドル部よりも小さく設定され、且つ湾曲し、
前記補強部は、横幅方向において前記ネック部の前記前端よりも外側に広がる幅広部であって、前記ヘッド部の前記背面の前記刷掃部の後端よりも前後方向前方側の領域に重なるように形成された幅広部を有し、
前記幅広部は、前記ヘッド部の背面における、前記前後方向に複数並ぶ前記毛束のうち少なくとも前記前後方向の後端に位置する前記毛束と重なる領域を含む領域に重なるように形成される。
The toothbrush of the present invention is
A rod-shaped handle portion,
A neck portion extending from a front end of the handle portion in a longitudinal direction;
a plate-shaped head portion connected to a front end of the neck portion in a longitudinal direction;
A brushing section is formed by a plurality of bristle bundles arranged in a front-rear direction and erected on a bristle planting surface on the inner side in the thickness direction of the head section;
a reinforcing portion extending from the front end of the neck portion so as to overlap a base end side of a back surface on an outer side in a thickness direction of the head portion,
The head portion is formed so as to have a thickness of 2 to 4 mm and a width smaller than a width of the handle portion,
The neck portion has a thickness and a width smaller than those of the handle portion, and is curved .
the reinforcing portion has a wide portion that extends outward from the front end of the neck portion in the lateral width direction and is formed so as to overlap an area of the back surface of the head portion that is forward in the front-rear direction from the rear end of the cleaning portion,
The wide portion is formed so as to overlap an area including at least an area that overlaps with the hair bundle located at the rear end in the front-to-rear direction among the multiple hair bundles arranged in the front-to-rear direction on the back surface of the head portion.
以上のように、本発明の歯ブラシは、奥歯をしっかりと磨くことができるという優れた効果を奏し得る。 As described above, the toothbrush of the present invention has the excellent effect of being able to thoroughly brush the back teeth.
以下、本発明の一実施形態にかかる歯ブラシについて、添付図面を参照しつつ説明する。本実施形態に係る歯ブラシは、特に、奥歯の磨き易さを向上させるように構成されたものであり、より具体的に説明すると、図８に示すような、奥歯Ｔの外側Ｔ１よりも奥側に位置する裏側Ｔ２を磨き易き易さを向上させたものである。 The toothbrush according to one embodiment of the present invention will be described below with reference to the attached drawings. The toothbrush according to this embodiment is particularly designed to improve the ease of brushing molars, and more specifically, as shown in Figure 8, the toothbrush improves the ease of brushing the back side T2 of a molar tooth T, which is located further back than the outside T1.
本実施形態に係る歯ブラシ１は、図１に示すように、使用者が握るハンドル部２と、ハンドル部２の長手方向における前端から延出するネック部３と、該ネック部３の長手方向における前端につながる板状のヘッド部４と、該ヘッド部４の厚み方向内側に位置する植毛面４０に立設された複数の毛によって構成される刷掃部５と、前記ネック部３の前記前端から、前記ヘッド部４の背面４１の基端側に重なるようにして延出する補強部６と、を備えている。 As shown in FIG. 1, the toothbrush 1 according to this embodiment comprises a handle portion 2 that is gripped by a user, a neck portion 3 that extends from the front end of the handle portion 2 in the longitudinal direction, a plate-shaped head portion 4 that is connected to the front end of the neck portion 3 in the longitudinal direction, a brushing portion 5 that is composed of a plurality of bristles that are erected on a bristle surface 40 that is located on the inner side in the thickness direction of the head portion 4, and a reinforcing portion 6 that extends from the front end of the neck portion 3 so as to overlap the base end side of the back surface 41 of the head portion 4.
ハンドル部２は、棒状である。本実施形態では、図２に示すように、ハンドル部２の軸線をハンドル軸線Ａと称する（図７参照）。 The handle portion 2 is rod-shaped. In this embodiment, as shown in FIG. 2, the axis of the handle portion 2 is referred to as the handle axis A (see FIG. 7).
ネック部３は、厚み方向外側に向かって凸状に湾曲している。なお、ネック部３では、厚み方向における内面と背面の両方が厚み方向外側に向かって湾曲している。 The neck portion 3 is curved convexly outward in the thickness direction. Note that both the inner surface and the back surface of the neck portion 3 in the thickness direction are curved outward in the thickness direction.
ネック部３の頂部（最も厚み方向外側に位置している部分）は、該ネック部３の長手方向における中央領側の域内に位置しており、本実施形態では、この中央側の領域内であり且つ該ネック部３の中央位置よりも前端側に位置している。さらに、ネック部３の頂部は、厚み方向においては補強部６よりも外側に位置している（図６参照）。 The apex of the neck portion 3 (the portion located most outward in the thickness direction) is located within the central region of the neck portion 3 in the longitudinal direction, and in this embodiment, it is located within this central region and further forward than the center position of the neck portion 3. Furthermore, the apex of the neck portion 3 is located outward in the thickness direction than the reinforcing portion 6 (see FIG. 6).
ネック部３の前端は、ネック部３の基端よりも厚み方向内側に位置している。そのため、ネック部３の基端がハンドル軸線Ａ上に位置している一方で、ネック部３の先端は、ハンドル軸線Ａよりも厚み方向内側に位置している。 The front end of the neck portion 3 is located inward in the thickness direction from the base end of the neck portion 3. Therefore, while the base end of the neck portion 3 is located on the handle axis A, the tip of the neck portion 3 is located inward in the thickness direction from the handle axis A.
ネック部３の横幅は、基端が最も広くなっており、基端から先端に向かうにつれて徐々に小さくなっている（図３参照）。 The width of the neck portion 3 is widest at the base end and gradually decreases from the base end to the tip end (see Figure 3).
ヘッド部４は、図４に示すように、ネック部３から延出するヘッド基部４２と、ヘッド基部４２の前端に連続するヘッド中部４３と、ヘッド中部４３の前端にさらに連続するヘッド先部４４と、を有する。 As shown in FIG. 4, the head portion 4 has a head base portion 42 extending from the neck portion 3, a head middle portion 43 continuing from the front end of the head base portion 42, and a head tip portion 44 continuing from the front end of the head middle portion 43.
本実施形態のヘッド部４は、厚み方向から見た形状が長楕円状であるため、ヘッド基部４２の横幅は、基端（ネック部３に連続する一端）から前端側に向かうにつれて徐々に広がっている。また、ヘッド中部４３の横幅は、基端から前端まで一定であり、ヘッド先部４４の横幅は、基端から先端側に向かうにつれて徐々に狭くなっている。 In this embodiment, the head portion 4 has an oblong shape when viewed in the thickness direction, so the width of the head base 42 gradually increases from the base end (the end connected to the neck portion 3) toward the front end. The width of the head middle portion 43 is constant from the base end to the front end, and the width of the head tip portion 44 gradually decreases from the base end toward the tip end.
これに伴い、ヘッド基部４２の外周側面４２０は、基端から前端側に向かうにつれて横幅方向外側に向かうようにして湾曲しており、ヘッド中部４３の外周側面４３０は、基端から前端側まで前後方向に沿って真っすぐに延びている。また、ヘッド先部４４の外周側面４４０は、基端から先端に向かうにつれて徐々に横幅が小さくなるように形成されており、前後方向前方側に凸となるように湾曲している。なお、図４に図示しているように、ヘッド基部４２の外周側面４２０とヘッド先部４４の外周側面４４０は、横幅方向外側に凸となるように湾曲している。 Accordingly, the outer peripheral side surface 420 of the head base 42 curves outward in the width direction from the base end toward the front end, and the outer peripheral side surface 430 of the head middle portion 43 extends straight in the front-to-rear direction from the base end to the front end. The outer peripheral side surface 440 of the head tip portion 44 is formed so that its width gradually decreases from the base end toward the tip end, and is curved so as to convex forward in the front-to-rear direction. As shown in FIG. 4, the outer peripheral side surface 420 of the head base portion 42 and the outer peripheral side surface 440 of the head tip portion 44 are curved so as to convex outward in the width direction.
ヘッド部４の厚みは、基端から先端まで一定である。 The thickness of the head portion 4 is constant from the base end to the tip.
刷掃部５は、図５に示すように、複数の毛を一つに束ねた複数の毛束５０によって構成されている。また、本実施形態の刷掃部５では、複数の毛束５０を前後方向に沿って並べた毛束５０の列が、横幅方向に並べて５つ形成されている。すなわち、本実施形態の歯ブラシ１は、５列タイプの歯ブラシ１である。 As shown in FIG. 5, the brushing unit 5 is composed of multiple bristle bundles 50, each of which is made up of multiple bristles bound together. In addition, in the brushing unit 5 of this embodiment, five rows of bristle bundles 50 are formed by arranging multiple bristle bundles 50 in the front-to-rear direction, and are arranged in the width direction. In other words, the toothbrush 1 of this embodiment is a five-row type toothbrush 1.
刷掃部５は、前後方向における先端部に位置する複数の毛束５０で構成されるつま先部５１と、後端部に位置する複数の毛束５０で構成される踵部５２と、つま先部５１と踵部５２との間で前後方向に沿って一列に並ぶ複数の毛束５０で構成される中部５３と、横幅方向における両側、すなわち、中部５３を境として横幅方向における一方側と他方側とに位置する複数の毛束５０で構成されている一対の脇部５４と、を有する。 The brushing section 5 has a toe section 51 made up of multiple bristle bundles 50 located at the tip in the front-to-rear direction, a heel section 52 made up of multiple bristle bundles 50 located at the rear end, a middle section 53 made up of multiple bristle bundles 50 lined up in a row in the front-to-rear direction between the toe section 51 and the heel section 52, and a pair of side sections 54 made up of multiple bristle bundles 50 located on both sides in the width direction, i.e., on one side and the other side in the width direction with the middle section 53 as the boundary.
つま先部５１は、前後幅よりも横幅の方が大きくなるように構成されている。すなわち、つま先部５１は、最も前方の毛束５０の前端から最も後方の毛束５０の後端までの前後幅よりも、横幅方向で最も外側に位置する一方の毛束５０の外端から他方の毛束５０の外端までの横幅の方が大きくなっている。また、つま先部５１は、厚み方向から見た形状が菱形状になっている。 The toe portion 51 is configured so that its width is greater than its front-to-rear width. In other words, the width from the outer end of one hair bundle 50 located at the outermost position in the width direction to the outer end of the other hair bundle 50 is greater than the front-to-rear width from the front end of the most forward hair bundle 50 to the rear end of the most rearward hair bundle 50. In addition, the toe portion 51 has a diamond shape when viewed from the thickness direction.
踵部５２も、つま先部５１と同様に、前後幅よりも横幅の方が大きくなるように構成されており、また、厚み方向から見た形状が菱形状になっている。 Like the toe section 51, the heel section 52 is configured so that its width is greater than its front-to-back width, and its shape when viewed from the thickness direction is diamond-shaped.
脇部５４には、毛束５０の列が複数含まれており、また、横幅方向外側の毛束５０の列は、横幅方向内の毛束５０の列に対して前後方向後方側にずれた位置に配置されている。そのため、脇部５４の前端と後端とは、横幅方向外側に向かうにつれて前後方向後方側に向かうように傾いている。なお、踵部５２の前端と、脇部５４の後端とは、互いに平行又は略平行に形成されている。 The armpits 54 include multiple rows of hair bundles 50, and the rows of hair bundles 50 on the outer side in the width direction are positioned rearward in the front-to-rear direction relative to the rows of hair bundles 50 on the inner side in the width direction. Therefore, the front and rear ends of the armpits 54 are inclined toward the rearward in the front-to-rear direction as they move toward the outer side in the width direction. The front end of the heel 52 and the rear end of the armpits 54 are formed parallel or approximately parallel to each other.
複数の毛束５０には、構成している毛の種類（材質や形状）が異なる２種類の毛束５０Ａ、５０Ｂが含まれており、つま先部５１、踵部５２、中部５３を構成する毛束５０Ａの毛と、脇部５４を構成する毛束５０Ｂの毛は、それぞれ種類が異なるものとなっている。 The multiple hair bundles 50 include two types of hair bundles 50A and 50B that differ in the type of hair (material and shape) that they comprise. The hair in the hair bundles 50A that make up the toe portion 51, heel portion 52, and middle portion 53 is of a different type from the hair in the hair bundles 50B that make up the armpit portion 54.
つま先部５１、踵部５２、中部５３を構成する毛束５０の毛は、例えば、ポリブチレンテレフタレート製であり、ラウンドテーパー形状であり、脇部５４を構成する毛束５０の毛は、例えば、ポリブチレンテレフタレート製であればよい。 The bristles of the bristles 50 that make up the toe section 51, heel section 52, and middle section 53 may be made of, for example, polybutylene terephthalate and have a round tapered shape, while the bristles of the bristles 50 that make up the armpit section 54 may be made of, for example, polybutylene terephthalate.
補強部６は、図４に示すように、横幅（横幅方向の寸法）がネック部３の先端（ネック部３の先端の幅）よりも広い幅広部と、横幅がネック部３の先端よりも狭い幅狭部と、を有する。 As shown in FIG. 4, the reinforcing portion 6 has a wide portion whose width (dimension in the width direction) is wider than the tip of the neck portion 3 (width of the tip of the neck portion 3), and a narrow portion whose width is narrower than the tip of the neck portion 3.
また、補強部６には、前後方向を基準とすれば、横幅が最も広い最大幅部６０よりも前後方向前方側に位置する補強前側領域６１と、該最大幅部６０よりも前後方向後方側に位置する補強後側領域６２とが含まれている。 The reinforcing portion 6 includes a reinforcing front region 61 located forward of the maximum width portion 60, which has the widest width, and a reinforcing rear region 62 located rearward of the maximum width portion 60.
補強前側領域６１では、前後方向前方側に向かうにつれて横幅が徐々に狭くなり、厚みも前後方向前方側に向かうにつれて徐々に狭くなっている。 In the reinforced front region 61, the width gradually narrows toward the front in the front-to-rear direction, and the thickness also gradually narrows toward the front in the front-to-rear direction.
補強後側領域６２では、前後方向後方側に向かうにつれて横幅が徐々に狭くなり、且つ基端の横幅がネック部３の先端と同じ横幅となっている。 In the reinforced rear region 62, the width gradually narrows toward the rear in the front-to-rear direction, and the width at the base end is the same as the width at the tip of the neck portion 3.
また、補強部６は、横幅方向を基準とすれば、横幅方向において中央部に位置する補強中部６３と、横幅方向における補強中部６３の両側に連続し、且つ補強中部６３よりも急勾配となるように形成された補強縁部６４と、を有する（図６参照）。 The reinforcing portion 6 has a reinforcing middle portion 63 located in the center in the width direction, and reinforcing edge portions 64 that are continuous with both sides of the reinforcing middle portion 63 in the width direction and are formed to have a steeper slope than the reinforcing middle portion 63 (see Figure 6).
補強中部６３と、ネック部３の背面３０とは、互いの境目に段差なく連続することで、１つの曲面を形成している。 The reinforcing middle section 63 and the back surface 30 of the neck section 3 are continuous with no step at the boundary between them, forming a single curved surface.
補強中部６３は、最大幅部６０に含まれる部分の横幅が最も広くなるように形成されており、補強中部６３のうちの最大幅部６０よりも前後方向前方側の横幅は、前端側に向かうにつれて徐々に狭くなっている。一方で、補強中部６３のうちの最大幅部６０よりも前後方向後方側の横幅は、基端側から前方に向かうにつれて徐々に広くなっている。 The reinforcing middle portion 63 is formed so that the width of the portion included in the widest portion 60 is the widest, and the width of the reinforcing middle portion 63 on the front-to-rear side of the widest portion 60 gradually narrows toward the front end. On the other hand, the width of the reinforcing middle portion 63 on the rear side of the widest portion 60 gradually widens toward the front from the base end.
また、補強縁部６４は、最大幅部６０に含まれる部分（前後方向における中央部）が、前後方向における前端と後端よりも横幅方向外側に位置するように湾曲している。すなわち、横幅方向外側に凸となるように湾曲している。 The reinforcing edge 64 is curved so that the portion included in the widest portion 60 (the center portion in the front-to-rear direction) is positioned outward in the width direction relative to the front and rear ends in the front-to-rear direction. In other words, it is curved so that it is convex outward in the width direction.
補強部６は、ヘッド部４を厚み方向で真っ直ぐ見たときに、幅広部が踵部５２と重なる位置に形成されている。また、本実施形態の補強部６は、最大幅部６０が刷掃部５の後端（踵部５２の最後部に位置する毛束５０の後端）よりも前後方向前方側、より具体的には、刷掃部５の後端と脇部５４の後端の間に位置するように形成されている。なお、本実施形態の最大幅部６０は、ヘッド部４を厚み方向からみたときに、踵部５２の最も後ろ側に位置する毛束５０と重なる位置を通るようにして形成されている。 The reinforcing portion 6 is formed at a position where the wide portion overlaps the heel portion 52 when the head portion 4 is viewed straight in the thickness direction. Furthermore, the reinforcing portion 6 of this embodiment is formed so that the maximum width portion 60 is located forward in the front-to-rear direction from the rear end of the brushing portion 5 (the rear end of the bristle bundle 50 located at the rearmost part of the heel portion 52), more specifically, between the rear end of the brushing portion 5 and the rear end of the armpit portion 54. Note that the maximum width portion 60 of this embodiment is formed so as to pass through a position where it overlaps with the bristle bundle 50 located at the rearmost part of the heel portion 52 when the head portion 4 is viewed in the thickness direction.
また、最大幅部６０の横幅方向における両端は、ヘッド基部４２の横幅方向における両端よりも内側に位置している。補強後側領域６２（補強縁部６４の後端部）の横幅方向における両端も、ヘッド基部４２の横幅方向における両端よりも内側に位置しており、前後方向前方側に向かうにつれてヘッド基部４２の両端との間隔が広がるように形成されている。なお、横幅方向においては、刷掃部５の外端（脇部５４の外端）の配置位置が、最大幅部６０の両端よりも外側であり且つヘッド部４の外周端よりも内側となるように設定されている。 In addition, both ends of the maximum width portion 60 in the width direction are located inside both ends of the head base 42 in the width direction. Both ends of the reinforcement rear region 62 (rear end of the reinforcing edge portion 64) in the width direction are also located inside both ends of the head base 42 in the width direction, and are formed so that the distance from both ends of the head base 42 increases toward the front-to-rear direction. In the width direction, the outer end of the brushing unit 5 (the outer end of the side portion 54) is set to be outside both ends of the maximum width portion 60 and inside the outer periphery of the head portion 4.
ここで、歯ブラシ１の各構成同士の寸法関係、位置関係について説明する。 Here, we will explain the dimensional and positional relationships between the components of the toothbrush 1.
ヘッド部４は、図７に示すように、植毛面４０がハンドル軸線Ａに対して８°傾くように形成されており、植毛面４０は、先端が後端よりも厚み方向内側に位置するように傾斜している。なお、ハンドル軸線Ａに対するヘッド部４の傾きは、８°～１４°（本実施形態では８°）に設定されていればよい。 As shown in FIG. 7, the head portion 4 is formed so that the bristles surface 40 is inclined at 8° with respect to the handle axis A, and the bristles surface 40 is inclined so that the tip is located further inward in the thickness direction than the rear end. The inclination of the head portion 4 with respect to the handle axis A may be set to 8° to 14° (8° in this embodiment).
また、ヘッド部４の背面４１から刷掃部５の毛先までの寸法（厚み方向での寸法）は、例えば、１１.０ｍｍ～１７.０ｍｍであればよい。なお、ヘッド部４の厚みは、３.０ｍｍ～３．５ｍｍ、刷掃部５の厚み（植毛面４０から毛先までの毛丈）は、９.０ｍｍ～１３.０ｍｍであればよい。なお、ヘッド部４の厚みと刷掃部５の厚みとは、１：３であることが好ましい。 The dimension from the back surface 41 of the head portion 4 to the tip of the bristles of the brushing portion 5 (dimension in the thickness direction) may be, for example, 11.0 mm to 17.0 mm. The thickness of the head portion 4 may be 3.0 mm to 3.5 mm, and the thickness of the brushing portion 5 (bristle length from the bristle implantation surface 40 to the tip of the bristles) may be 9.0 mm to 13.0 mm. The ratio of the thickness of the head portion 4 to the thickness of the brushing portion 5 is preferably 1:3.
さらに、刷掃部５の先端面には、ネック部３の基端部も位置している。 In addition, the base end of the neck portion 3 is located on the tip surface of the cleaning portion 5.
図３に示すように、ヘッド部４の横幅の最大値は、ハンドル部２の横幅よりも小さくなっており、例えば、ヘッド部４の横幅は、１０.０ｍｍ～１２.０ｍｍ、ハンドル部２の横幅は１１.０ｍｍ～１５.０ｍｍに設定されていればよい。 As shown in FIG. 3, the maximum width of the head portion 4 is smaller than the width of the handle portion 2. For example, the width of the head portion 4 may be set to 10.0 mm to 12.0 mm, and the width of the handle portion 2 may be set to 11.0 mm to 15.0 mm.
また、ヘッド部４の横幅の最大値は、ネック部３の先端の横幅よりも広くなっている。なお、ネック部３は、例えば、基端の横幅が１１.０ｍｍ、先端の横幅が４．５ｍｍとなっていればよい。 The maximum width of the head portion 4 is wider than the width of the tip of the neck portion 3. For example, the neck portion 3 may have a width of 11.0 mm at the base end and a width of 4.5 mm at the tip.
本実施形態に係る歯ブラシ１の構成は、以上の通りである。本実施形態の歯ブラシ１によれば、ヘッド部４が、厚み２～４ｍｍであり、且つ横幅が前記ハンドル部２の横幅よりも小さくなるように形成された、厚みと横幅が小さい小型のものであるため、歯ブラシ１を口に挿し込んだ際にヘッド部４が歯と頬の間に入り易くなっている。 The configuration of the toothbrush 1 according to this embodiment is as described above. According to the toothbrush 1 of this embodiment, the head portion 4 is small in thickness and width, being 2 to 4 mm thick and formed so that its width is smaller than the width of the handle portion 2, so that when the toothbrush 1 is inserted in the mouth, the head portion 4 can easily fit between the teeth and cheek.
また、ヘッド部４は、湾曲するネック部３の前端に連続し、且つハンドル部２の軸線よりも厚み方向内側に位置するとともに、植毛面４０の基端よりも先端の方が前記厚み方向内側に位置するように８°傾いているため、ヘッド部４を歯の並びに沿わせて口の奥まで進入させ易くなっている。 The head portion 4 is connected to the front end of the curved neck portion 3, and is located inward in the thickness direction from the axis of the handle portion 2. It is also tilted at an angle of 8 degrees so that the tip is located inward in the thickness direction from the base end of the bristles surface 40, making it easy to insert the head portion 4 deep into the mouth along the alignment of the teeth.
このように、上記構成の歯ブラシ１は、ヘッド部４を口の奥深くまで進入させ易くすることによって、刷掃部５の毛先を奥歯の後ろ側に回り込ませ易くなっている。なお、ネック部３が歯の並びに合わせて厚み方向外側に湾曲していることから、使用者がハンドル部２を回して歯を磨くとき（いわゆる、ローリング法により歯を磨くとき）に歯に対するネック部３の干渉を抑えつつ、ヘッド部４を大きく旋回させることにより、歯を十分な力で磨くことができるようになる。 In this way, the toothbrush 1 configured as described above makes it easier for the head portion 4 to penetrate deep into the mouth, making it easier for the bristles of the brushing portion 5 to wrap around the back of the molars. Furthermore, because the neck portion 3 is curved outward in the thickness direction to match the alignment of the teeth, when the user turns the handle portion 2 to brush their teeth (so-called when brushing their teeth using the rolling method), they can brush their teeth with sufficient force by rotating the head portion 4 widely while minimizing interference of the neck portion 3 with the teeth.
また、刷掃部５の毛の毛丈が９．０ｍｍ～１３．０ｍｍに設定されていることから、歯や歯茎に刷掃部の毛が当たった際、毛腰が硬すぎず、且つ柔らかすぎない適度なブラッシング圧が得られるようになっている。 In addition, the length of the bristles of the brushing part 5 is set to 9.0 mm to 13.0 mm, so that when the bristles of the brushing part come into contact with the teeth and gums, the bristles are neither too hard nor too soft, providing an appropriate brushing pressure.
さらに、ヘッド部４の背面４１の基端部にはネック部３の前端から延出する補強部６が幅広く重なっているため、ヘッド部４の基端部は、厚みが増すことによって剛性が高められている。そのため、毛束５０を歯に押し付けた際にネック部３に対するヘッド部４の撓みを防止することができ、これにより、使用者によって歯ブラシ１に込められた力の減少を抑えたうえで、この力を刷掃部５に伝えることができる。従って、上記構成の歯ブラシ１によれば、刷掃部５の毛を奥歯の裏側まで届かせたうえで、奥歯全体を刷掃部５によって十分な力で磨くことができる。 Furthermore, the reinforcement portion 6 extending from the front end of the neck portion 3 overlaps widely with the base end of the back surface 41 of the head portion 4, increasing the thickness and stiffness of the base end of the head portion 4. This makes it possible to prevent the head portion 4 from bending relative to the neck portion 3 when the bristle bundle 50 is pressed against the teeth, thereby making it possible to transmit the force applied to the toothbrush 1 by the user to the brushing portion 5 while suppressing any reduction in this force. Therefore, with the toothbrush 1 configured as described above, the bristles of the brushing portion 5 can reach the back side of the molars, and the entire molars can be brushed with sufficient force by the brushing portion 5.
以上のように、本実施形態の歯ブラシ１は、奥歯の裏側であっても刷掃部５の毛を当てて汚れを落とし易くすることによって、奥歯の磨き残しを減らすことができ、これにより、奥歯をしっかりと磨くことができるという優れた効果を奏し得る。 As described above, the toothbrush 1 of this embodiment can reduce areas of the molars that are not brushed by placing the bristles of the brushing part 5 on the backs of the molars, making it easier to remove dirt, thereby providing the excellent effect of allowing the molars to be brushed thoroughly.
しかも、ネック部３は、ネック部３の前端がネック部３の基端よりも厚み方向において内側に位置し且つ頂部が厚み方向において補強部６よりも外側に位置するようにして湾曲しているため、ネック部３自体も厚み方向外側への撓みが抑えられる。 In addition, the neck portion 3 is curved so that the front end of the neck portion 3 is located inside the base end of the neck portion 3 in the thickness direction and the apex is located outside the reinforcing portion 6 in the thickness direction, so that the neck portion 3 itself is also prevented from bending outward in the thickness direction.
また、補強中部６３とネック部３の背面３０とは、互いの境目に段差がない状態で連続することで１つの曲面を形成しているため、ヘッド部４は、いっそう厚み方向外側に撓みにくくなっている。 In addition, the reinforcing middle section 63 and the back surface 30 of the neck section 3 are continuous with no step at the boundary between them, forming a single curved surface, so the head section 4 is even less likely to bend outward in the thickness direction.
さらに、踵部５２を使って歯を磨くとき（いわゆる、踵磨きを行うとき）、ヘッド部４の基端部には歯から厚み方向外側に押し返される力が集中するが、本実施形態の補強部６は、ヘッド部４を厚み方向で真っ直ぐ見たときに、幅広部が踵部５２と重なるように形成されているため、この場合においても、ヘッド部４の基端部がネック部３に対して厚み方向外側に撓まないようにすることができる。 Furthermore, when using the heel portion 52 to brush the teeth (so-called heel brushing), the force pushing back from the teeth in the thickness direction is concentrated on the base end of the head portion 4. However, the reinforcing portion 6 of this embodiment is formed so that the wide portion overlaps with the heel portion 52 when the head portion 4 is viewed straight in the thickness direction. Therefore, even in this case, the base end of the head portion 4 is prevented from bending outward in the thickness direction relative to the neck portion 3.
なお、本実施形態の補強部６では、最大幅部６０、補強前側領域６１、補強後側領域６２のうちのヘッド部４の背面４１に重なっている部分がそれぞれヘッド部４の外端よりも内側に位置しており、さらに、補強前側領域６１と補強後側領域６２とは、最大幅部６０から離れるにつれて横幅が狭くなるように丸みを帯びた形状になっている。 In the reinforcing portion 6 of this embodiment, the portions of the maximum width portion 60, the front reinforcement region 61, and the rear reinforcement region 62 that overlap the back surface 41 of the head portion 4 are each located inside the outer end of the head portion 4, and further, the front reinforcement region 61 and the rear reinforcement region 62 have a rounded shape such that the width narrows with increasing distance from the maximum width portion 60.
そのため、口に挿し込んだ歯ブラシ１を長手方向に沿って動かすとき（例えば、口の奥に挿し込んだり、口の奥から引き抜いたり、往復同させたりするとき）に補強部６が頬や歯に干渉してしまうことを抑えることができ、歯ブラシ１をスムーズに動かすことができるようになる。 As a result, when the toothbrush 1 inserted in the mouth is moved along the longitudinal direction (for example, when it is inserted into the back of the mouth, pulled out from the back of the mouth, or moved back and forth), the reinforcing part 6 is prevented from interfering with the cheeks or teeth, allowing the toothbrush 1 to be moved smoothly.
また、本実施形態の歯ブラシ１では、ネック部３の長手方向における寸法が６０．０ｍｍ～７０．０ｍｍに設定されていてるため、奥歯の裏側、口腔内の奥側の歯列に刷掃部の毛を当てることが容易となる。 In addition, in the toothbrush 1 of this embodiment, the longitudinal dimension of the neck portion 3 is set to 60.0 mm to 70.0 mm, making it easy to place the bristles of the brushing portion on the backs of the molars and the dentition at the back of the mouth.
さらに、ヘッド部４の背面４１から刷掃部５の刷掃面までの寸法が１１．０ｍｍ～１７．０ｍｍに設定されていることから、奥歯の裏側や、歯列と***部や頬の裏側等、口腔内の狭い箇所において刷掃部の毛先を歯と歯茎に当て易くなる。 In addition, the dimension from the back surface 41 of the head unit 4 to the brushing surface of the brushing unit 5 is set to 11.0 mm to 17.0 mm, making it easier to bring the bristles of the brushing unit into contact with the teeth and gums in narrow areas of the oral cavity, such as the backs of the molars, the dentition and the lips, or the backs of the cheeks.
なお、本発明に係る歯ブラシは、上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々の変更を加え得ることは勿論である。 The toothbrush according to the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
上記実施形態において、刷掃部５は、前記毛束５０の列を５つ備えるように構成されていたが、毛束５０の列の数は５列でなくてもよい。 In the above embodiment, the brushing unit 5 is configured to have five rows of bristle bundles 50, but the number of rows of bristle bundles 50 does not have to be five.
なお、上記実施形態の歯ブラシは、In addition, the toothbrush of the above embodiment is
棒状のハンドル部と、A rod-shaped handle portion,
ハンドル部の長手方向における前端から延出するネック部と、A neck portion extending from a front end of the handle portion in a longitudinal direction;
該ネック部の長手方向における前端につながる板状のヘッド部と、a plate-shaped head portion connected to a front end of the neck portion in a longitudinal direction;
該ヘッド部における厚み方向内側の植毛面に立設された複数の毛によって構成される刷掃部と、A brushing section formed of a plurality of bristles erected on a bristled surface on the inner side in the thickness direction of the head section;
前記ネック部の前記前端から、前記ヘッド部における厚み方向外側の背面の基端側に重なるようにして延出する補強部と、を備え、a reinforcing portion extending from the front end of the neck portion so as to overlap a base end side of a back surface on an outer side in a thickness direction of the head portion,
前記ヘッド部は、厚みが２～４ｍｍに設定され、且つ横幅が前記ハンドル部の横幅よりも小さくなるように設定されるとともに、前記植毛面の先端が前記植毛面の基端よりも厚み方向内側に位置するように前記ハンドル部の軸線に対して８°～１４°傾くように形成され、the head portion has a thickness of 2 to 4 mm and a width smaller than that of the handle portion, and is inclined at an angle of 8° to 14° with respect to the axis of the handle portion so that a tip end of the bristle implantation surface is located on the inner side in the thickness direction than a base end of the bristle implantation surface;
前記ネック部は、厚みと横幅が前記ハンドル部よりも小さく設定され、且つ前記前端が前記軸線よりも厚み方向内側に位置するようにして湾曲し、The neck portion has a thickness and a width smaller than those of the handle portion, and is curved such that the front end is located on the inner side of the axis in the thickness direction.
前記補強部は、横幅方向において前記ネック部の前記前端よりも外側に広がる幅広部であって、前記ヘッド部の前記背面の前記刷掃部の後端よりも前後方向前方側の領域に重なるように形成された幅広部を有するようにしてもよい。The reinforcing portion may have a wide portion that extends outward in the width direction further than the front end of the neck portion, and is formed so as to overlap an area on the back surface of the head portion that is forward in the fore-and-aft direction further than the rear end of the cleaning portion.
上記構成の歯ブラシでは、ヘッド部が、厚み２～４ｍｍであり、且つ横幅が前記ハンドル部の横幅よりも小さくなるように形成された、厚みと横幅が小さい小型のものであるため、歯ブラシを口に挿し込んだ際にヘッド部が歯と頬の間に入り易くなっている。In the toothbrush configured as described above, the head portion is 2 to 4 mm thick and has a width smaller than that of the handle portion, making it small in thickness and width, so that when the toothbrush is inserted in the mouth, the head portion can easily fit between the teeth and cheek.
また、ヘッド部は、湾曲するネック部の前端に連続し、且つハンドル部の軸線よりも厚み方向内側に位置するとともに、植毛面の基端よりも先端の方が前記厚み方向内側に位置するように８°～１４°傾いているため、ヘッド部を歯の並びに沿わせて口の奥まで進入させ易くなっている。In addition, the head portion is continuous with the front end of the curved neck portion, is located inward in the thickness direction from the axis of the handle portion, and is inclined at an angle of 8° to 14° so that the tip is located inward in the thickness direction from the base end of the bristles surface, making it easy to insert the head portion into the back of the mouth along the alignment of the teeth.
このように、上記構成の歯ブラシは、ヘッド部を口の奥深くまで進入させ易くすることによって、刷掃部の毛先を奥歯の後ろ側に回り込ませ易くなっている。In this way, the toothbrush having the above configuration makes it easier for the head portion to penetrate deep into the mouth, making it easier for the bristles of the brushing portion to reach the back of the molars.
さらに、ヘッド部の基端部の背面にはネック部の前端から延出する補強部が幅広く重なっているため、ヘッド部の基端部は、厚みが増すことによって剛性が高められている。そのため、毛束を歯に押し付けた際にネック部に対するヘッド部の撓みを防止することができ、これにより、使用者によって歯ブラシに込められた力の減少を抑えたうえで、この力を刷掃部に伝えることができる。従って、上記構成の歯ブラシによれば、刷掃部の毛を奥歯の裏側まで届かせたうえで、奥歯全体を刷掃部によって十分な力で磨くことができる。Furthermore, the reinforcement portion extending from the front end of the neck portion overlaps the back surface of the base end of the head portion widely, and the thickness of the base end of the head portion is increased, thereby increasing its rigidity. This makes it possible to prevent the head portion from bending relative to the neck portion when the bristles are pressed against the teeth, and thus makes it possible to transmit the force applied to the toothbrush by the user to the brushing portion while suppressing the decrease in force. Therefore, with the toothbrush configured as described above, the bristles of the brushing portion can reach the back side of the molars, and the entire molars can be brushed with sufficient force by the brushing portion.
以上のように、上記構成の歯ブラシは、奥歯の裏側であっても刷掃部の毛を当てて汚れを落とし易くすることによって、奥歯の磨き残しを減らすことができるようになっている。As described above, the toothbrush having the above configuration is capable of reducing areas of the molars that are not brushed by making it easier to remove dirt by placing the bristles of the brushing part against the backs of the molars.
また、上記実施形態の歯ブラシにおいて、In addition, in the toothbrush of the above embodiment,
前記ネック部の長手方向における寸法は、６０．０ｍｍ～７０．０ｍｍに設定されていてもよい。The longitudinal dimension of the neck portion may be set to 60.0 mm to 70.0 mm.
上記構成の歯ブラシによれば、奥歯の裏側、口腔内の奥側の歯列に刷掃部の毛を当てることが容易となる。With the toothbrush having the above configuration, it becomes easy to bring the bristles of the brushing portion into contact with the backs of the molars and the dentition at the back of the oral cavity.
また、上記実施形態の歯ブラシにおいて、In addition, in the toothbrush of the above embodiment,
前記刷掃部の毛の毛丈は、９．０ｍｍ～１３．０ｍｍに設定されていてもよい。The bristles of the brushing portion may have a bristle length set to 9.0 mm to 13.0 mm.
上記構成の歯ブラシによれば、歯や歯茎に刷掃部の毛が当たった際、毛腰が硬すぎず、且つ柔らかすぎない適度なブラッシング圧が得られる。With the toothbrush having the above configuration, when the bristles of the brushing portion come into contact with the teeth and gums, the bristles are neither too hard nor too soft, providing an appropriate brushing pressure.
また、上記実施形態の歯ブラシにおいて、In addition, in the toothbrush of the above embodiment,
前記ヘッド部の前記背面から前記刷掃部の刷掃面までの寸法は、１１．０ｍｍ～１７．０ｍｍに設定されていてもよい。The dimension from the rear surface of the head portion to the cleaning surface of the cleaning portion may be set to 11.0 mm to 17.0 mm.
上記構成の歯ブラシによれば、奥歯の裏側や、歯列と***部や頬の裏側等、口腔内の狭い箇所において刷掃部の毛先を歯と歯茎に当て易くなる。With the toothbrush configured as described above, the bristles of the brushing part can easily come into contact with the teeth and gums in narrow areas of the oral cavity, such as the backs of the molars, between the teeth and the lips, or the backs of the cheeks.
また、上記実施形態の本発明の歯ブラシにおいて、In addition, in the toothbrush of the present invention according to the above embodiment,
前記ヘッド部の前記背面から前記刷掃部の刷掃面までの寸法は、前記厚み方向における前記ネック部の基端の位置から先端の位置までの距離以下に設定されていてもよい。The dimension from the back surface of the head portion to the cleaning surface of the cleaning portion may be set to be equal to or less than the distance from the base end position to the tip end position of the neck portion in the thickness direction.
上記構成の歯ブラシによれば、ヘッド部や、ネック部が歯から離れにくくなるため、ヘッド部を口の奥に進入させ易くなる。With a toothbrush having the above configuration, the head portion and neck portion are less likely to come off the teeth, making it easier to insert the head portion deep into the mouth.
１…歯ブラシ、２…ハンドル部、３…ネック部、４…ヘッド部、５…刷掃部、６…補強部、３０…背面、４０…植毛面、４１…背面、４２…ヘッド基部、４３…ヘッド中部、４４…ヘッド先部、５０…毛束、５０Ａ、５０Ｂ…毛束、５１…つま先部、５２…踵部、５３…中部、５４…脇部、６０…最大幅部、６１…補強前側領域、６２…補強後側領域、６３…補強中部、６４…補強縁部、４２０…ヘッド基部の外周側面、４３０…ヘッド中部の外周側面、４４０…ヘッド先部の外周側面、Ａ…ハンドル軸線 1...toothbrush, 2...handle, 3...neck, 4...head, 5...brushing section, 6...reinforcement, 30...back, 40...hair implantation surface, 41...back, 42...head base, 43...head middle, 44...head tip, 50...hair bundle, 50A, 50B...hair bundle, 51...toe, 52...heel, 53...middle, 54...side, 60...maximum width, 61...reinforced front region, 62...reinforced rear region, 63...reinforced middle, 64...reinforced edge, 420...outer periphery of head base, 430...outer periphery of head middle, 440...outer periphery of head tip, A...handle axis
Claims (1)
ハンドル部の長手方向における前端から延出するネック部と、
該ネック部の長手方向における前端につながる板状のヘッド部と、
前後方向で並ぶようにして該ヘッド部における厚み方向内側の植毛面に立設された複数の毛束によって構成される刷掃部と、
前記ネック部の前記前端から、前記ヘッド部における厚み方向外側の背面の基端側に重なるようにして延出する補強部と、を備え、
前記ヘッド部は、厚みが２～４ｍｍに設定され、且つ横幅が前記ハンドル部の横幅よりも小さくなるように設定されるように形成され、
前記ネック部は、厚みと横幅が前記ハンドル部よりも小さく設定され、且つ湾曲し、
前記補強部は、横幅方向において前記ネック部の前記前端よりも外側に広がる幅広部であって、前記ヘッド部の前記背面の前記刷掃部の後端よりも前後方向前方側の領域に重なるように形成された幅広部を有し、
前記幅広部は、前記ヘッド部の背面における、前記前後方向に複数並ぶ前記毛束のうち少なくとも前記前後方向の後端に位置する前記毛束と重なる領域を含む領域に重なるように形成される、
歯ブラシ。 A rod-shaped handle portion,
A neck portion extending from a front end of the handle portion in a longitudinal direction;
a plate-shaped head portion connected to a front end of the neck portion in a longitudinal direction;
A brushing section is formed by a plurality of bristle bundles arranged in a front-rear direction and erected on a bristle planting surface on the inner side in the thickness direction of the head section;
a reinforcing portion extending from the front end of the neck portion so as to overlap a base end side of a back surface on an outer side in a thickness direction of the head portion,
The head portion is formed so as to have a thickness of 2 to 4 mm and a width smaller than a width of the handle portion,
The neck portion has a thickness and a width smaller than those of the handle portion, and is curved .
the reinforcing portion has a wide portion that extends outward from the front end of the neck portion in the lateral width direction and is formed so as to overlap an area of the back surface of the head portion that is forward in the front-rear direction from the rear end of the cleaning portion,
The wide portion is formed to overlap an area including at least an area overlapping with a hair bundle located at a rear end in the front-rear direction among the hair bundles arranged in the front-rear direction on the back surface of the head portion.
toothbrush.
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| JP2001299450A (en) | 2000-04-27 | 2001-10-30 | Lion Corp | Toothbrush |
| JP7143914B1 (en) | 2021-03-26 | 2022-09-29 | 株式会社セガ | Program and information processing device |
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| JP3387591B2 (en) * | 1993-11-22 | 2003-03-17 | ジョンソン・エンド・ジョンソン株式会社 | toothbrush |
| JP2002028028A (en) * | 2000-07-14 | 2002-01-29 | Lion Corp | Toothbrush handle |
| JP5993555B2 (en) * | 2011-08-09 | 2016-09-14 | ライオン株式会社 | toothbrush |
| GB201509862D0 (en) * | 2015-06-08 | 2015-07-22 | Glaxosmithkline Consumer Healt | Novel device |
| JP2017176219A (en) * | 2016-03-28 | 2017-10-05 | ライオン株式会社 | Toothbrush handle body, and toothbrush |
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| JP2001299450A (en) | 2000-04-27 | 2001-10-30 | Lion Corp | Toothbrush |
| JP7143914B1 (en) | 2021-03-26 | 2022-09-29 | 株式会社セガ | Program and information processing device |
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