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JP3674980B2 - electric toothbrush - Google Patents
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JP3674980B2 - electric toothbrush - Google Patents

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Publication number
JP3674980B2
JP3674980B2 JP12180695A JP12180695A JP3674980B2 JP 3674980 B2 JP3674980 B2 JP 3674980B2 JP 12180695 A JP12180695 A JP 12180695A JP 12180695 A JP12180695 A JP 12180695A JP 3674980 B2 JP3674980 B2 JP 3674980B2
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JP
Japan
Prior art keywords
housing
membrane
electric toothbrush
cover
storage battery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP12180695A
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Japanese (ja)
Other versions
JPH08315864A (en
Inventor
晴彦 成瀬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP12180695A priority Critical patent/JP3674980B2/en
Publication of JPH08315864A publication Critical patent/JPH08315864A/en
Application granted granted Critical
Publication of JP3674980B2 publication Critical patent/JP3674980B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/224Electrical recharging arrangements
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Brushes (AREA)
  • Secondary Cells (AREA)

Description

【0001】
【産業上の利用分野】
本発明は、蓄電池を内蔵した電動歯ブラシに関するものである。
【0002】
【従来の技術】
従来、図5、図6に示されるように蓄電池15を内蔵した電動歯ブラシにおいては蓄電池15の特性上、水素ガスを発生させる恐れがあり、安全対策上水素ガスが発生した場合のガス抜き構造が必要となっている。図中1はハウジング、15は蓄電池、3は電池カバー、16はモータ、17は先部に歯ブラシ体が着脱自在に取り付けられる駆動軸、18は駆動軸17の動作状態を操作するための操作片である。
【0003】
そして、従来の電動歯ブラシにおいてはガスを排出するためのガス膜2をハウジング1の底部を構成する電池カバー3の底部に配置しており、図7、図8に示されるようにガス膜2はハウジング1の底面部に設置された状態となっている。
【0004】
【発明が解決しようとする課題】
しかし、ガス膜2の特性として完全に水分の通過を抑えることができず、ハウジング1の使用時に充電時の温度差によってハウジング1内で空気の膨張収縮が生じてハウジング1内が負圧になるとガス膜2から充電器4上面に付着した水分を吸い上げる状態が発生し、ガス膜2を介してハウジング1内に水分が浸入するという問題が生じる。
【0005】
充電方式として電動歯ブラシのように水分の付着が常に伴うものでは無接点での誘導充電方式があるが、水分の吸い上げ防止の為、ハウジング1下部を充電器4上面より距離を設けるようにする方法が考えられる。しかしながら誘導充電として充電器4とハウジング1との間に大きい距離を設ければ充電効率が大きくダウンすることとなり、実用的ではない。
【0006】
本発明は上記問題点の解決を目的とするものであり、ハウジング下部を充電器上面より距離を設けて配置しなくとも膜を介してハウジング内に水分が浸入するようなことのない電動歯ブラシを提供しようとするものである。
【0007】
【課題を解決するための手段】
上記目的を達成するために、本発明では、ハウジング内に蓄電池が内蔵され、蓄電池を誘導充電方式の非接触にて充電状態とする電動歯ブラシにおいて、ハウジングを密閉防水機構とし、ハウジングの側面部にガスの通過を許すが水を通さない膜を配置したことを特徴とするものである。
【0008】
また、ハウジングとは別体となった別部材に膜を設置し、この別部材をハウジングに取着するようにしてもよい。
また、Oリングを介して膜をハウジングの側面部に設置するようにしてもよい。
【0009】
【作用】
しかして、ハウジングの側面部に膜を配置することで充電状態時に膜の近傍に水分が存在しないようにすることができ、膜を介してハウジング内に水分が浸入するのを防止できる。
また、ハウジングとは別体となった別部材に膜を設置し、この別部材をハウジングに取着するようにしてあると、別部材をハウジングに取着することでハウジングの側面部に膜を設置することができ、また、別部材によって膜が外部から接触しにくい構造としてハウジングに設置することができる。
【0010】
また、Oリングを介して膜をハウジングの側面部に設置するようにしてあると、膜をハウジングに設置するにあたってヒートシール等による膜の固定が不要であり、組み立てを簡単にすることができる。
【0011】
【実施例】
以下、本発明を図示された実施例に基づいて詳述する。
ハウジング1内に収納配置される蓄電池、モータ、駆動軸等の配置状態は図6に示される従来例と基本的に同じであるので、膜2の設置部位並びに電池カバー3について詳述する。
【0012】
本発明における電動歯ブラシはハウジング1内に蓄電池が内蔵されており、充電器4に立てた状態で配置して蓄電池を誘導充電方式にて充電することができるようになっている。
ハウジング1の底部には電池カバー3が取り付けられるようになっており、このハウジング1の底部を構成する電池カバー3の側面部にガスの通過を許すが水を通さない膜2が配置されている。
【0013】
ハウジング1の底部に取着される電池カバー3は上面が開口する受け箱状に形成されており、側壁には内外に連通する開口部5が設けられている。図1に示されるものにあっては、内側に細径の内側通気孔5aを設け、外側に上記内側通気孔5aよりも大径の外側通気孔5bを設けて開口部5が形成されている。
内側通気孔5aの開口縁からは外側に向けて支持突起6が突設されており、この支持突起6に当接するようにして膜2が外側通気孔5b内に配置されている。外側通気孔5b内には膜カバー7が設置されており、この膜カバー7によって膜2に使用者の指等が接触しないようになっている。
【0014】
図2は他の実施例を示すものであり、このものにあっては、ハウジング1の底部を構成する電池カバー3とは別体となった別部材としての膜カバー7に膜2を設置し、この別部材としての膜カバー7を電池カバー3の開口部5に対して取り付けるようにしたものが示されている。
上記別部材としての膜カバー7は外周面に電池カバー3の開口部5内に設けられた段部8に係合される係合段部9が形成されており、電池カバー3の開口部5の段部8に対して係合段部9を圧入することによって電池カバー3に取り付けられるようになっている。膜カバー7には厚み方向にわたって通気孔10が凹設されており、この通気孔10は膜カバー7の外面に設けられた小径のガス抜き孔11を介して外部に連通するようになっている。膜2は上記通気口10を閉じるようにして膜カバー7の内側に取り付けられている。
【0015】
そして、このものにあっては膜2が取り付けられた別部材としての膜カバー7を電池カバー3の開口部5に圧入することによって膜2の設置を手間取ることなく簡単に行うことができるようになっている。また、電池カバー7の内側に膜2が設置されていることによって外部から膜2に対して使用者の指等が接触しにくい構造とすることができるようになっている。
【0016】
図3はさらに他の実施例を示すものであり、このものにあっては、電池カバー3の開口部5に設けられた段部8にOリング12を設置するようにし、別部材としての膜カバー7と電池カバー3とのシール性をさらに向上させることができるようになっている。
図4はさらに他の実施例を示すものであり、このものにあっては、電池カバー3に設けられる開口部5としての外側通気孔5bの内面に凹所13を凹設し、この凹所13内にOリング12を設置し、Oリング12に膜2の内側が接するようにして外側通気孔5b内に膜カバー7を圧入固定するようにしている。このように外側を膜カバー7に圧接させると共に内側をOリング12に圧接させて膜2を設置するようにすると膜2を設置するにあたってヒートシール等による膜2の固定が不要であり、組み立てを簡単にすることができるものである。
【0017】
【発明の効果】
本発明は、ハウジング内に蓄電池が内蔵され、蓄電池を誘導充電方式の非接触にて充電状態とする電動歯ブラシにおいて、ハウジングを密閉防水機構とし、ハウジングの側面部にガスの通過を許すが水を通さない膜を配置してあるので、ハウジングの側面部に膜を配置することで充電状態時に膜の近傍に水分が存在しないようにすることができるものであり、膜を介してハウジング内に水分が浸入するのを防止できるものである。
【0018】
また、ハウジングとは別体となった別部材に膜を設置し、この別部材をハウジングに取着するようにしてあると、別部材をハウジングに取着することでハウジングの側面部に膜を設置することができるものであり、また、別部材によって膜が外部から接触しにくい構造としてハウジングに設置することができるものである。
【0019】
また、Oリングを介して膜をハウジングの側面部に設置するようにしてあると、膜をハウジングに設置するにあたってヒートシール等による膜の固定が不要であり、組み立てを簡単にすることができるものである。
【図面の簡単な説明】
【図1】本発明の一実施例を示すものであり、(a)は充電時におけるハウジングの配置状態を示す一部省略した側面図、(b)は(a)におけるイ部の拡大断面図である。
【図2】他の実施例における膜の設置状態を示す拡大断面図である。
【図3】さらに他の実施例を示すものであり、(a)は平断面図、(b)は正面図、(c)は側断面図である。
【図4】さらに他の実施例における膜の設置状態を示す拡大断面図である。
【図5】従来例における充電器へのハウジングの設置状態を示すものであり、(a)は正面図、(b)は側面図である。
【図6】従来例における電動歯ブラシを示すものであり、(a)は一部破断した正面図、(b)は側断面図である。
【図7】同上のガス膜の配置状態を示すものであり、(a)は電池カバーの平面図、(b)は(a)におけるロ−ロ線断面図である。
【図8】従来例を示すものであり、(a)は充電時におけるハウジングの配置状態を示す一部省略した側面図、(b)はガス膜の配置状態を示すハウジングの下面図である。
【符号の説明】
1 ハウジング
2 膜
[0001]
[Industrial application fields]
The present invention relates to an electric toothbrush incorporating a storage battery.
[0002]
[Prior art]
Conventionally, in an electric toothbrush with a built-in storage battery 15 as shown in FIGS. 5 and 6, there is a risk of generating hydrogen gas due to the characteristics of the storage battery 15, and there is a degassing structure when hydrogen gas is generated for safety measures. It is necessary. In the figure, 1 is a housing, 15 is a storage battery, 3 is a battery cover, 16 is a motor, 17 is a drive shaft to which a toothbrush body is detachably attached to the tip, and 18 is an operating piece for operating the operating state of the drive shaft 17. It is.
[0003]
In the conventional electric toothbrush, the gas film 2 for discharging the gas is disposed at the bottom of the battery cover 3 constituting the bottom of the housing 1, and the gas film 2 is formed as shown in FIGS. It is in a state of being installed on the bottom surface of the housing 1.
[0004]
[Problems to be solved by the invention]
However, as a characteristic of the gas film 2, it is not possible to completely suppress the passage of moisture, and when the housing 1 is used, if a temperature difference during charging causes expansion and contraction of air in the housing 1 and the inside of the housing 1 becomes negative pressure. A state occurs in which moisture adhering to the upper surface of the charger 4 is sucked from the gas film 2, and moisture enters into the housing 1 through the gas film 2.
[0005]
As a charging method, there is a contactless inductive charging method that is always accompanied by moisture such as an electric toothbrush. However, a method in which the lower portion of the housing 1 is provided at a distance from the upper surface of the charger 4 in order to prevent the suction of moisture. Can be considered. However, if a large distance is provided between the charger 4 and the housing 1 for inductive charging, the charging efficiency will be greatly reduced, which is not practical.
[0006]
An object of the present invention is to solve the above-described problems. An electric toothbrush that does not allow moisture to enter the housing through the membrane without arranging the lower portion of the housing at a distance from the upper surface of the charger. It is something to be offered.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, in an electric toothbrush in which a storage battery is built in a housing and the storage battery is charged in an inductive charging system in a non-contact state, the housing is a hermetically sealed waterproof mechanism, A membrane that allows gas to pass through but does not allow water to pass therethrough is provided.
[0008]
Further, a film may be installed on a separate member separate from the housing, and this separate member may be attached to the housing.
Further, the membrane may be installed on the side surface of the housing via an O-ring.
[0009]
[Action]
Thus, by disposing the membrane on the side surface of the housing, it is possible to prevent moisture from being present in the vicinity of the membrane in the charged state, and it is possible to prevent moisture from entering the housing through the membrane.
Also, if a membrane is installed on a separate member that is separate from the housing, and this separate member is attached to the housing, the membrane is attached to the side surface of the housing by attaching the separate member to the housing. It can be installed, and can be installed in the housing as a structure in which the membrane is difficult to contact from the outside by another member.
[0010]
If the membrane is installed on the side surface of the housing via the O-ring, it is not necessary to fix the membrane by heat sealing or the like when installing the membrane on the housing, and the assembly can be simplified.
[0011]
【Example】
Hereinafter, the present invention will be described in detail based on illustrated embodiments.
Since the arrangement state of the storage battery, the motor, the drive shaft and the like housed in the housing 1 is basically the same as that of the conventional example shown in FIG. 6, the installation site of the membrane 2 and the battery cover 3 will be described in detail.
[0012]
The electric toothbrush according to the present invention has a built-in storage battery in the housing 1 and is arranged in a state where it is stood on the charger 4 so that the storage battery can be charged by an inductive charging method.
A battery cover 3 is attached to the bottom of the housing 1, and a membrane 2 that allows gas to pass but does not allow water to pass is disposed on a side surface of the battery cover 3 that constitutes the bottom of the housing 1. .
[0013]
The battery cover 3 attached to the bottom of the housing 1 is formed in a receiving box shape whose upper surface is open, and an opening 5 that communicates with the inside and outside is provided on the side wall. In the case shown in FIG. 1, an opening portion 5 is formed by providing a narrow inner vent hole 5a on the inner side and an outer vent hole 5b having a larger diameter than the inner vent hole 5a on the outer side. .
A support protrusion 6 protrudes outward from the opening edge of the inner vent hole 5a, and the membrane 2 is disposed in the outer vent hole 5b so as to contact the support protrusion 6. A membrane cover 7 is installed in the outer vent hole 5 b, and the membrane cover 7 prevents the user's finger or the like from coming into contact with the membrane 2.
[0014]
FIG. 2 shows another embodiment, in which the membrane 2 is installed on a membrane cover 7 as a separate member separate from the battery cover 3 constituting the bottom of the housing 1. In this figure, a film cover 7 as another member is attached to the opening 5 of the battery cover 3.
The membrane cover 7 as the separate member is formed with an engaging step 9 to be engaged with a step 8 provided in the opening 5 of the battery cover 3 on the outer peripheral surface. The engagement step portion 9 is press-fitted into the step portion 8 to be attached to the battery cover 3. A vent hole 10 is provided in the membrane cover 7 in the thickness direction, and the vent hole 10 communicates with the outside through a small-diameter vent hole 11 provided on the outer surface of the membrane cover 7. . The membrane 2 is attached to the inside of the membrane cover 7 so as to close the vent 10.
[0015]
In this case, the membrane cover 7 as another member to which the membrane 2 is attached is press-fitted into the opening 5 of the battery cover 3 so that the membrane 2 can be installed easily without taking time. It has become. Further, since the membrane 2 is installed on the inner side of the battery cover 7, a structure in which a user's finger or the like is difficult to contact the membrane 2 from the outside can be achieved.
[0016]
FIG. 3 shows still another embodiment. In this embodiment, an O-ring 12 is installed in a step portion 8 provided in the opening 5 of the battery cover 3, and a film as a separate member is shown. The sealing property between the cover 7 and the battery cover 3 can be further improved.
FIG. 4 shows still another embodiment. In this embodiment, a recess 13 is provided on the inner surface of the outer vent hole 5b as the opening 5 provided in the battery cover 3, and this recess is formed. An O-ring 12 is installed in the inside 13, and the membrane cover 7 is press-fitted and fixed in the outer vent hole 5 b so that the inside of the membrane 2 is in contact with the O-ring 12. In this way, when the membrane 2 is installed with the outer side pressed against the membrane cover 7 and the inner side pressed against the O-ring 12, fixing of the membrane 2 by heat sealing or the like is not necessary when installing the membrane 2. It can be simplified.
[0017]
【The invention's effect】
The present invention relates to an electric toothbrush in which a storage battery is built in a housing, and the storage battery is charged in a non-contact manner using an inductive charging method. Since a membrane that does not pass is disposed, it is possible to prevent moisture from being present in the vicinity of the membrane in the charged state by arranging the membrane on the side surface of the housing. Can prevent the intrusion.
[0018]
Also, if a membrane is installed on a separate member that is separate from the housing, and this separate member is attached to the housing, the membrane is attached to the side surface of the housing by attaching the separate member to the housing. It can be installed, and can be installed in the housing as a structure in which the membrane is difficult to contact from the outside by another member.
[0019]
In addition, if the membrane is installed on the side surface of the housing via the O-ring, it is not necessary to fix the membrane by heat sealing or the like when installing the membrane on the housing, and the assembly can be simplified. It is.
[Brief description of the drawings]
1A and 1B show an embodiment of the present invention, in which FIG. 1A is a partially omitted side view showing an arrangement state of housings during charging, and FIG. 1B is an enlarged cross-sectional view of a portion in FIG. It is.
FIG. 2 is an enlarged cross-sectional view showing a state of installation of a film in another embodiment.
FIG. 3 shows still another embodiment, in which (a) is a plan sectional view, (b) is a front view, and (c) is a side sectional view.
FIG. 4 is an enlarged sectional view showing a state of installation of a film in still another embodiment.
FIGS. 5A and 5B show a state where a housing is installed in a charger in a conventional example, where FIG. 5A is a front view and FIG. 5B is a side view.
6A and 6B show an electric toothbrush in a conventional example, in which FIG. 6A is a partially broken front view, and FIG. 6B is a side sectional view.
FIGS. 7A and 7B show the arrangement of the gas film, wherein FIG. 7A is a plan view of the battery cover, and FIG. 7B is a cross-sectional view along the roll line in FIG.
FIGS. 8A and 8B show a conventional example, in which FIG. 8A is a partially omitted side view showing the arrangement state of the housing during charging, and FIG. 8B is a bottom view of the housing showing the arrangement state of the gas film.
[Explanation of symbols]
1 Housing 2 Membrane

Claims (3)

ハウジング内に蓄電池が内蔵され、蓄電池を誘導充電方式の非接触にて充電状態とする電動歯ブラシにおいて、ハウジングを密閉防水機構とし、ハウジングの側面部にガスの通過を許すが水を通さない膜を配置して成ることを特徴とする電動歯ブラシ。In an electric toothbrush in which a storage battery is built in the housing, and the storage battery is charged in an inductive charging method without contact, the housing is a hermetically sealed waterproof mechanism, and a membrane that allows gas to pass but does not allow water to pass through the side of the housing. An electric toothbrush characterized by being arranged. ハウジングとは別体となった別部材に膜を設置し、この別部材をハウジングに取着して成ることを特徴とする請求項1記載の電動歯ブラシ。The electric toothbrush according to claim 1, wherein a film is installed on a separate member separate from the housing, and the separate member is attached to the housing. Oリングを介して膜をハウジングの側面部に設置して成ることを特徴とする請求項1記載の電動歯ブラシ。2. The electric toothbrush according to claim 1, wherein the membrane is installed on a side surface portion of the housing via an O-ring.
JP12180695A 1995-05-19 1995-05-19 electric toothbrush Expired - Fee Related JP3674980B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12180695A JP3674980B2 (en) 1995-05-19 1995-05-19 electric toothbrush

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12180695A JP3674980B2 (en) 1995-05-19 1995-05-19 electric toothbrush

Publications (2)

Publication Number Publication Date
JPH08315864A JPH08315864A (en) 1996-11-29
JP3674980B2 true JP3674980B2 (en) 2005-07-27

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JP12180695A Expired - Fee Related JP3674980B2 (en) 1995-05-19 1995-05-19 electric toothbrush

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MY159639A (en) 2008-07-09 2017-01-13 Access Business Group Int Llc Wireless charging system

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JPH08315864A (en) 1996-11-29

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