JP2012176165A - Rotary electric toothbrush - Google Patents

Rotary electric toothbrush Download PDF

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JP2012176165A
JP2012176165A JP2011041228A JP2011041228A JP2012176165A JP 2012176165 A JP2012176165 A JP 2012176165A JP 2011041228 A JP2011041228 A JP 2011041228A JP 2011041228 A JP2011041228 A JP 2011041228A JP 2012176165 A JP2012176165 A JP 2012176165A
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toothbrush
toothbrushes
shaft
tip
motor
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Iwao Yamazaki
岩男 山崎
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Ya Man Ltd
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Ya Man Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a rotary electric toothbrush in which a toothtbrush part is not bulky and has a wide brushing area.SOLUTION: Toothbrushes are formed which have tufts implanted radially in tips of two rotary shafts, two right and left toothbrushes are arranged closely so that tips of tufts of both the brushes cross each other, and base ends of the rotary shafts are coupled to a motor built in a handle part to rotate the toothbrushes in directions opposite to each other. The brushing area is wide since the two toothbrushes are arranged side by side. The rotary shafts and bearing parts thereof are formed of flexible materials and the gap between the two toothbrushes is freely widened, so that teeth can be brushed from a variety of directions.

Description

本発明は、モータでブラシが回転する形式の歯ブラシに関する。   The present invention relates to a toothbrush in which a brush is rotated by a motor.

この種の歯ブラシには２つのタイプがある。ブラシの毛が回転軸に対し放射状のタイプと平行なタイプである。放射状タイプは磨く面積を広く設計しにくいが、平行タイプは毛先が平面的に並ぶため磨く面積を広くし易い利点がある。
平行タイプの例として特許4073957号がある。この例はモータを内蔵したハンドルの先にブラシを植えた円板を取付け、モータで円板を回転する構造である。ハンドルを握ったときブラシの毛先が正面に向くように、円板はハンドルに対し横向きに取付けられている。このためハンドルの長さ方向に沿って設けたモータの出力軸に対し円板の回転軸は直角に交差し、伝動はべべルギアで行っている。 There are two types of toothbrushes of this type. The brush bristles are of a type parallel to the radial type with respect to the rotation axis. The radial type is difficult to design a wide polishing area, but the parallel type has an advantage that the polishing area can be easily widened because the hair tips are arranged in a plane.
Japanese Patent No. 4073957 is an example of the parallel type. In this example, a disc having a brush planted at the end of a handle incorporating a motor is attached, and the disc is rotated by the motor. The disc is mounted laterally with respect to the handle so that the tip of the brush faces the front when the handle is gripped. For this reason, the rotation axis of the disc intersects with the output shaft of the motor provided along the length direction of the handle at a right angle, and transmission is performed by a bevel gear.

このことから平行タイプにおいては、毛先とは反対側の歯ブラシ裏側にべべルギアの収容空間を設ける必要があり、この空間のためにブラシ全体が嵩張り、奥歯を磨くとき口を大きく開けなければならないなど、歯ブラシの使用感が優れないという問題があった。   For this reason, in the parallel type, it is necessary to provide a space for the bevel gear on the back side of the toothbrush on the opposite side of the bristles. Because of this space, the entire brush is bulky and the mouth must be opened wide when brushing the back teeth. There was a problem that the usability of the toothbrush was not excellent.

特許4073957号公報Japanese Patent No. 4073957

本発明は、このような従来の問題を解決するもので、放射状タイプを採用することにより平行タイプに必須のベベルギア用の空間を省略し、そのうえで従来の放射状タイプと違って磨く面積を広く確保することを目的とする。
さらに従来困難であった歯の噛み合わせ面と側面の同時磨きを可能にするなど、使い勝手の向上を目的とする。 The present invention solves such a conventional problem. By adopting the radial type, the space for the bevel gear, which is essential for the parallel type, is omitted, and in addition, a wide polishing area is secured unlike the conventional radial type. For the purpose.
Furthermore, the purpose is to improve usability, such as making it possible to polish both the tooth meshing surface and the side surface, which has been difficult in the past.

本発明の請求項１の回転式電動歯ブラシは、2本の回転軸の先端部に放射状に植毛した歯ブラシを形成して、両方のブラシの毛先が交差するように歯ブラシを左右２本接近して配置すると共に、前記回転軸の基端部をハンドル部に内蔵したモータに連結して、前記歯ブラシを両者逆方向に回転することを特徴とする。   The rotary electric toothbrush according to claim 1 of the present invention forms a toothbrush that is radially implanted at the tip of two rotating shafts, and the two toothbrushes are moved closer to each other so that the tips of both brushes intersect. And the base end portion of the rotating shaft is connected to a motor built in the handle portion to rotate the toothbrush in the opposite direction.

また、請求項２は、前記歯ブラシを具備する歯ブラシ支持部をハンドル部に対し取外し可能に連結すると共に、歯ブラシ支持部と連結し合う前記ハンドル部の連結端面に、モータ側の出力軸の軸端部を露出させ、この軸端部と前記回転軸の基端部をスプライン結合により着脱自在に連結することを特徴とする。   According to a second aspect of the present invention, the toothbrush support portion having the toothbrush is detachably connected to the handle portion, and the shaft end of the output shaft on the motor side is connected to the connection end surface of the handle portion that is connected to the toothbrush support portion. And a shaft end portion and a base end portion of the rotary shaft are detachably connected by spline coupling.

また、請求項３は、歯ブラシ支持部の先端部にブラシ軸受け部を取付け、ブラシ軸受け部には正面に向けて４本のアームを一体的に張り出し、各アームには軸穴を形成し、これらの軸穴に前記歯ブラシの先端部を挿通して各歯ブラシの根本側と先端側の２箇所をそれぞれ支承すると共に、これらアーム４本及び回転軸２本を可撓性材料により形成することを特徴とする。   According to a third aspect of the present invention, a brush bearing portion is attached to the tip portion of the toothbrush support portion, and four arms are integrally extended toward the front surface of the brush bearing portion, and a shaft hole is formed in each arm. The tip of the toothbrush is inserted into the shaft hole of the toothbrush to support the root side and the tip side of each toothbrush, and the four arms and the two rotary shafts are formed of a flexible material. And

また、請求項４は、前記可撓性材料が熱可塑性エラストマーであることを特徴とする。   According to a fourth aspect of the present invention, the flexible material is a thermoplastic elastomer.

さらに、請求項５は、2本の回転軸の先端部に放射状に植毛した歯ブラシを形成して、両方のブラシの毛先が交差するように歯ブラシを左右２本接近して配置すると共に、前記回転軸の基端部をハンドル部に内蔵したモータに連結して、前記歯ブラシを両者逆方向に回転するように構成し、そして前記ハンドル部内にモータに給電する充電器とこれに接続する誘導コイルを設ける一方、ハンドル部の基底部を嵌合してハンドル部を起立するスタンド部を備え、このスタンド部の内部に、家庭用コンセントに接続すべき電磁コイルを設けて、両コイル間の電磁誘導により前記充電器を充電することを特徴とする。   Further, according to claim 5, a toothbrush that is radially planted is formed at the tip of two rotating shafts, and two toothbrushes are arranged close to each other so that the tips of both brushes intersect, The base end portion of the rotating shaft is connected to a motor built in the handle portion, the toothbrush is configured to rotate in the opposite direction, and a charger for supplying power to the motor in the handle portion and an induction coil connected thereto On the other hand, it is provided with a stand part that fits the base part of the handle part and erects the handle part, and an electromagnetic coil to be connected to a household outlet is provided inside the stand part, and electromagnetic induction between both coils is provided. To charge the charger.

請求項１の発明によれば、放射状の歯ブラシを左右2本に並べた構造なので、歯ブラシ１本に比べ磨く面積を広く設計できる。また歯ブラシの裏側にベベルギア用の収容空間を設ける必要がないから、口を大きく開かなくても、奥歯まで歯ブラシを容易に挿入でき使用感が良い。さらに2本の歯ブラシは逆方向に回転するので、歯の汚れを落し易いし、また歯ブラシの毛先が交差するので、歯ブラシ自身の汚れも落ち易く、清潔に使用できる。   According to the first aspect of the present invention, since the radial toothbrushes are arranged in two on the left and right, the area to be polished can be designed wider than that of one toothbrush. Further, since it is not necessary to provide a bevel gear housing space on the back side of the toothbrush, the toothbrush can be easily inserted to the back teeth without opening the mouth wide, and the usability is good. Furthermore, since the two toothbrushes rotate in the opposite directions, the dirt on the teeth is easy to remove, and since the tips of the toothbrushes intersect, the toothbrush itself is easy to remove and can be used cleanly.

また請求項２では、歯ブラシ支持部をハンドル部に対し取外し可能に連結するので、歯ブラシ支持部を付け替えれば、ハンドル部を家族など複数人で共用できるし、使い古した歯ブラシを新しいものに簡単に交換することも出来る。また歯ブラシの回転軸とハンドル部の出力軸をスプライン結合するので、歯ブラシ支持部をハンドル部に組み付けるだけで歯ブラシの回転軸をモータの出力軸に連結できる。   Further, in claim 2, since the toothbrush support part is detachably connected to the handle part, if the toothbrush support part is replaced, the handle part can be shared by a plurality of people such as family members, and the used toothbrush can be easily replaced with a new one. You can also Further, since the rotation shaft of the toothbrush and the output shaft of the handle portion are spline-coupled, the rotation shaft of the toothbrush can be connected to the output shaft of the motor simply by assembling the toothbrush support portion to the handle portion.

また請求項３では、歯ブラシの根本側と先端側の２箇所を支承するアームを可撓性材料で形成するので、歯ブラシを歯に押し付けると反力でアームが側方に曲がって左右に広がり、2本の歯ブラシの距離が離れる。そのため、歯の噛み合わせ面と歯の側面を同時に磨くなど多様な使用法が可能となる。また回転軸も可撓性材料で形成するので、アームが曲がって歯ブラシの軸位置が定位置からずれても、出力軸の回転が回転軸に円滑に伝わる。   Moreover, in Claim 3, since the arm which supports two places of the root side of a toothbrush and a front end side is formed with a flexible material, when a toothbrush is pressed against a tooth, an arm bends to a side by reaction force, and it spreads right and left, The distance between the two toothbrushes increases. Therefore, various usages such as brushing the tooth meshing surface and the tooth side surface simultaneously are possible. Further, since the rotating shaft is also made of a flexible material, even if the arm is bent and the axial position of the toothbrush is deviated from the fixed position, the rotation of the output shaft is smoothly transmitted to the rotating shaft.

また請求項４では、可撓性材料が熱可塑性エラストマーであるから複雑な形状も容易に成型できる。   Further, in claim 4, since the flexible material is a thermoplastic elastomer, a complicated shape can be easily molded.

さらに請求項５では、ハンドル部の充電器をスタンド部と非接触で充電するので、洗面台等の水を使う場所で使用しても感電することなく安全であるという効果を奏する。   Furthermore, since the charger of the handle portion is charged in a non-contact manner with the stand portion, even if it is used in a place where water is used such as a washstand, there is an effect that it is safe without electric shock.

本発明を実施した歯ブラシ支持部の正面図で仮想線は変形状態を示す。In the front view of the toothbrush support part which implemented this invention, a virtual line shows a deformation | transformation state. 図1の平面図Plan view of Fig. 1 図1の側面図Side view of Figure 1 図1の背面図Rear view of Figure 1 図1の底面図Bottom view of Figure 1 図１の歯ブラシ支持部をスタンド部に取付けた状態の全体側面図The whole side view of the state which attached the toothbrush support part of FIG. 1 to the stand part 本発明を実施した回転式電動歯ブラシの回路図Circuit diagram of a rotary electric toothbrush embodying the present invention 本発明の動力伝達経路を示す機構図Mechanism diagram showing power transmission path of the present invention 本発明の使用状態説明図Use state explanatory drawing of this invention 本発明の使用状態説明図Use state explanatory drawing of this invention 本発明の使用状態説明図Use state explanatory drawing of this invention

本発明の実施の形態を図に示して説明する。
１は左右1対の回転軸で、先端部は複数本の金属細線を撚り合わせた構造で、これら細線間にブラシの毛を挟むことにより、放射状の歯ブラシ２が形成してある。２本の歯ブラシ２は正面から見て左右に接近して並び互いのブラシの毛先が交差している（図１、２）。
３は歯ブラシ支持部で先細りの形状をしている。この先細りの先端部にブラシ軸受け部４を取付ける。ブラシ軸受け部４には正面に向けて４本のアーム５を一体的に張り出し、各アーム５には軸穴を形成し、これらの軸穴に前記回転軸１を挿通して各歯ブラシ２の根本側と先端側の２箇所を支承する。
そしてこれら４本のアーム５を含むブラシ軸受け部４、及び２本の回転軸１を、可撓性材料、例えば熱可塑性エラストマー（ＴＰＥ）のような軟質樹脂により形成する。他方、それ以外の歯ブラシ支持部３は硬質材料、例えばポリプロピレンのような熱可塑性樹脂により形成する。 Embodiments of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a pair of left and right rotating shafts, and a tip portion has a structure in which a plurality of fine metal wires are twisted together, and a radial toothbrush 2 is formed by sandwiching brush hairs between these fine wires. The two toothbrushes 2 are close to each other when viewed from the front, and the tips of the brushes intersect each other (FIGS. 1 and 2).
Reference numeral 3 denotes a toothbrush support portion having a tapered shape. The brush bearing portion 4 is attached to the tapered tip portion. Four arms 5 are integrally extended to the brush bearing portion 4 toward the front, shaft holes are formed in each arm 5, and the rotary shaft 1 is inserted into these shaft holes to form the roots of the toothbrushes 2. Supports two places on the side and the tip side.
The brush bearing portion 4 including these four arms 5 and the two rotating shafts 1 are formed of a flexible material, for example, a soft resin such as a thermoplastic elastomer (TPE). On the other hand, the other toothbrush support portions 3 are formed of a hard material, for example, a thermoplastic resin such as polypropylene.

歯ブラシ支持部３の基部は外径が末広がりに太くなっている。回転軸１はこの太い基部に形成した上下方向の通孔６を貫いて歯ブラシ支持部３の内部に突き出て、その底部において基端部７が遊離端となっている。基端部７の断面は四角形である。
８は円柱形のハンドル部で、これに歯ブラシ支持部３を取外し可能に連結する。すなわちハンドル部８の連結端面に係合片（図時省略）を起立し、これに歯ブラシ支持部３の底部内周の突起９を着脱試合に係止して連結する。ハンドル部８にはモータ１０が内蔵され、その出力側の軸端部１１がハンドル部８の連結端面に露出している。この軸端部１１の中心には角穴が穿ってあり、歯ブラシ支持部３をハンドル部８に連結すると、回転軸１の基端部７が、この角穴に挿入され、回転軸１とモータ１０の出力側がスプライン結合する。
左右の軸端部１１はギア１２で連結され、双方、等速で逆方向に回転するようになっている（図２、８）。 The base part of the toothbrush support part 3 has a thick outer diameter. The rotary shaft 1 passes through a vertical through hole 6 formed in the thick base portion and protrudes into the toothbrush support portion 3, and a base end portion 7 is a free end at the bottom thereof. The cross section of the base end portion 7 is a quadrangle.
A cylindrical handle portion 8 is connected to the toothbrush support portion 3 so as to be removable. That is, an engagement piece (not shown) is erected on the connection end surface of the handle portion 8, and the protrusion 9 on the inner periphery of the bottom portion of the toothbrush support portion 3 is engaged with and attached to the attachment / detachment game. A motor 10 is built in the handle portion 8, and a shaft end portion 11 on the output side thereof is exposed on the connecting end surface of the handle portion 8. A square hole is formed in the center of the shaft end portion 11, and when the toothbrush support portion 3 is connected to the handle portion 8, the base end portion 7 of the rotating shaft 1 is inserted into the square hole. The 10 output sides are splined.
The left and right shaft end portions 11 are connected by a gear 12, and both rotate at the same speed in the opposite direction (FIGS. 2 and 8).

１３はハンドル部８を立てかけるスタンドで、内部に電磁コイル１４が設けられている。電磁コイル１４は付属の電源コードを介して家庭用コンセントＳに接続する(図7)。
一方、ハンドル部８の内部には、モータ１０を起動する充電式バッテリ１５とそれを充電する誘電コイル１６が設けられ、ハンドル部８をスタンド１２の縦穴に差し込んで起立すると、コイル１４，１６の間の電磁誘導によりバッテリ１５が充電される。
１７はハンドル部８の正面に設けたスイッチで、防水カバーで覆われている。１８は整流器を示す。 Reference numeral 13 denotes a stand on which the handle portion 8 is stood, and an electromagnetic coil 14 is provided therein. The electromagnetic coil 14 is connected to a household outlet S via an attached power cord (FIG. 7).
On the other hand, a rechargeable battery 15 for starting the motor 10 and a dielectric coil 16 for charging the motor 10 are provided inside the handle portion 8. When the handle portion 8 is inserted into the vertical hole of the stand 12 and stands, The battery 15 is charged by electromagnetic induction.
A switch 17 is provided in front of the handle portion 8 and is covered with a waterproof cover. Reference numeral 18 denotes a rectifier.

スイッチ１７を押して回路を閉じるとモータ１０が回転し、それが軸端部１１から回転軸１に伝わり、２本の歯ブラシ２が回転する。
２本の歯ブラシ２の間に歯を差し込むと、歯ブラシの間が広がって歯の裏側を表側と同時に磨くことが出来る（図９）。２本の回転軸１とアーム５は可撓性のため、図１及び２の仮想線で示すように、曲がっても支障なく回転する。
また歯の角に歯ブラシを当てると噛み合わせ面と側面が同時に磨けるし（図１０）、歯を上下噛み合わせた状態で歯ブラシを当てると、上下の歯を同時に磨くことも出来る（図１１）。
このように本発明の回転式電動歯ブラシは歯を様々な角度から磨けて良好な歯磨き効果が期待できる。
なお歯ブラシ２は左右同一方向に回転させてもよいし、回転速度に差をつけてもよい。これらはギアの組み合わせで任意に設計できる。 When the switch 17 is pressed to close the circuit, the motor 10 rotates, which is transmitted from the shaft end 11 to the rotating shaft 1 and the two toothbrushes 2 rotate.
When teeth are inserted between the two toothbrushes 2, the space between the toothbrushes spreads and the back side of the teeth can be polished simultaneously with the front side (FIG. 9). Since the two rotating shafts 1 and the arm 5 are flexible, even if they are bent, the two rotating shafts 1 and the arm 5 rotate without any problem as shown by phantom lines in FIGS.
In addition, when the toothbrush is applied to the corner of the tooth, the meshing surface and the side surface can be polished simultaneously (FIG. 10), and when the toothbrush is applied with the teeth meshed vertically, the upper and lower teeth can be polished simultaneously (FIG. 11).
Thus, the rotary electric toothbrush of the present invention can be expected to have a good brushing effect by brushing teeth from various angles.
The toothbrush 2 may be rotated in the same direction on the left and right, or the rotational speed may be different. These can be arbitrarily designed by a combination of gears.

１は回転軸
２は歯ブラシ
３は歯ブラシ支持部
４は歯ブラシ軸受け部
５はアーム
６は通孔
７は基端部
８はハンドル部
１０はモータ
１１は軸端部
１３はスタンド部
１４は電磁コイル
１５は充電式バッテリ
１６は誘電コイル 1 is a rotating shaft 2 is a toothbrush 3 is a toothbrush support part 4 is a toothbrush bearing part 5 is an arm 6 is a through hole 7 is a base end part 8 is a handle part 10 is a motor 11 is a shaft end part 13 is a stand part 14 is an electromagnetic coil 15 Is a rechargeable battery 16 is a dielectric coil

Claims (5)

2本の回転軸の先端部に放射状に植毛した歯ブラシを形成して、両方のブラシの毛先が交差するように歯ブラシを左右２本接近して配置すると共に、前記回転軸の各基端部をハンドル部に内蔵したモータに連結して、前記歯ブラシを両者逆方向に回転することを特徴とする回転式電動歯ブラシ。   A toothbrush that is radially planted at the tip of two rotating shafts is formed, and two toothbrushes are arranged close to each other so that the tips of both brushes intersect, and each base end of the rotating shaft Is connected to a motor built in the handle portion, and the toothbrush rotates in the opposite direction. 前記歯ブラシを具備する歯ブラシ支持部をハンドル部に対し取外し可能に連結すると共に、
歯ブラシ支持部と連結し合う前記ハンドル部の連結端面に、モータ側の出力軸の軸端部を露出させ、この軸端部と前記回転軸の基端部をスプライン結合により着脱自在に連結することを特徴とする請求項１記載の回転式電動歯ブラシ。 The toothbrush support portion having the toothbrush is detachably connected to the handle portion, and
The shaft end portion of the output shaft on the motor side is exposed to the connection end surface of the handle portion that is connected to the toothbrush support portion, and the shaft end portion and the base end portion of the rotating shaft are detachably connected by spline coupling. The rotary electric toothbrush according to claim 1. 前記歯ブラシ支持部の先端部にブラシ軸受け部を取付け、ブラシ軸受け部には正面に向けて４本のアームを一体的に張り出し、各アームには軸穴を形成し、これらの軸穴に前記歯ブラシの先端部を挿通して各歯ブラシの根本側と先端側の２箇所をそれぞれ支承し、
さらにこれらアーム４本及び回転軸２本を可撓性材料により形成することを特徴とする請求項１記載の回転式電動歯ブラシ。 A brush bearing portion is attached to the tip of the toothbrush support portion, and four arms are integrally extended toward the front of the brush bearing portion, shaft holes are formed in each arm, and the toothbrushes are formed in these shaft holes. Inserting the tip of each toothbrush, and supporting each of the toothbrush root side and tip side,
4. The rotary electric toothbrush according to claim 1, wherein the four arms and the two rotating shafts are made of a flexible material. 前記可撓性材料が熱可塑性エラストマーであることを特徴とする請求項３記載の回転式電動歯ブラシ。   The rotary electric toothbrush according to claim 3, wherein the flexible material is a thermoplastic elastomer. 2本の回転軸の先端部に放射状に植毛した歯ブラシを形成して、両方のブラシの毛先が交差するように歯ブラシを左右２本接近して配置すると共に、前記回転軸の基端部をハンドル部に内蔵したモータに連結して、前記歯ブラシを両者逆方向に回転するように構成し、
そして前記ハンドル部内にモータに給電する充電器とこれに接続する誘導コイルを設ける一方、ハンドル部の基底部を嵌合してハンドル部を起立するスタンド部を備え、このスタンド部の内部に、家庭用コンセントに接続すべき電磁コイルを設けて、両コイル間の電磁誘導により前記充電器を充電することを特徴とする回転式電動歯ブラシ。 A toothbrush that is radially implanted at the tip of the two rotating shafts is formed, two toothbrushes are arranged close to each other so that the tips of both brushes intersect, and the base end of the rotating shaft is Connected to the motor built in the handle, and configured to rotate the toothbrush in the opposite direction,
In addition, a charger for supplying power to the motor and an induction coil connected to the motor are provided in the handle portion, and a stand portion is provided for fitting the base portion of the handle portion to erect the handle portion. A rotary electric toothbrush characterized in that an electromagnetic coil to be connected to an electrical outlet is provided and the charger is charged by electromagnetic induction between the two coils.
JP2011041228A 2011-02-28 2011-02-28 Rotary electric toothbrush Pending JP2012176165A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104434335A (en) * 2014-12-19 2015-03-25 胡达广 Electric toothbrush
JP5936750B1 (en) * 2015-05-27 2016-06-22 株式会社バンダイ Toothbrush stand

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Publication number Priority date Publication date Assignee Title
JPS493774U (en) * 1972-04-14 1974-01-12
JPS5955210A (en) * 1982-09-24 1984-03-30 富士プラント工業株式会社 Double rotary type toothbrush
EP0488971A2 (en) * 1990-11-30 1992-06-03 Renzo Giunti Toothbrush with rotating brushes
JPH09507030A (en) * 1993-10-26 1997-07-15 アルノウクス、パトリック Toothbrush with twin rotation brush system
JP2003534095A (en) * 2000-05-31 2003-11-18 ブラウン ゲーエムベーハー Electric toothbrush with transmitter
JP2004534603A (en) * 2001-07-16 2004-11-18 チョイ、ジュ−ア electric toothbrush
WO2009092958A2 (en) * 2008-01-14 2009-07-30 Dental Revolution Ltd Toothbrush with dual rotary brushing system

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Publication number Priority date Publication date Assignee Title
JPS493774U (en) * 1972-04-14 1974-01-12
JPS5955210A (en) * 1982-09-24 1984-03-30 富士プラント工業株式会社 Double rotary type toothbrush
EP0488971A2 (en) * 1990-11-30 1992-06-03 Renzo Giunti Toothbrush with rotating brushes
JPH09507030A (en) * 1993-10-26 1997-07-15 アルノウクス、パトリック Toothbrush with twin rotation brush system
JP2003534095A (en) * 2000-05-31 2003-11-18 ブラウン ゲーエムベーハー Electric toothbrush with transmitter
JP2004534603A (en) * 2001-07-16 2004-11-18 チョイ、ジュ−ア electric toothbrush
WO2009092958A2 (en) * 2008-01-14 2009-07-30 Dental Revolution Ltd Toothbrush with dual rotary brushing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104434335A (en) * 2014-12-19 2015-03-25 胡达广 Electric toothbrush
JP5936750B1 (en) * 2015-05-27 2016-06-22 株式会社バンダイ Toothbrush stand

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