JPH0634796B2 - Electric toothpaste - Google Patents
Electric toothpasteInfo
- Publication number
- JPH0634796B2 JPH0634796B2 JP61138997A JP13899786A JPH0634796B2 JP H0634796 B2 JPH0634796 B2 JP H0634796B2 JP 61138997 A JP61138997 A JP 61138997A JP 13899786 A JP13899786 A JP 13899786A JP H0634796 B2 JPH0634796 B2 JP H0634796B2
- Authority
- JP
- Japan
- Prior art keywords
- packing
- drive shaft
- outer peripheral
- peripheral side
- housing
- 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
Links
Description
【技術分野】 本発明は電動歯ぶらし、殊に軸方向の往復運動と軸回り
の往復回動運動との両者の歯ぶらし体に行なわせること
ができる電動歯ぶらしにおける防水構造に関するもので
ある。TECHNICAL FIELD The present invention relates to an electric toothbrush, and more particularly to a waterproof structure for an electric toothbrush capable of causing both toothbrush bodies to perform a reciprocating motion in an axial direction and a reciprocating rotary motion about an axis. Is.
軸方向の往復運動と軸回りの往復回動運動との両者を選
択的に歯ぶらし体に行なわせることができる電動歯ぶら
しが特公昭５２−４３９８１号公報に示されている。 ところで電動歯ぶらしにおいては、その使用雰囲気から
して防水構造の採用が必須であり、上記公報に示された
ものにしても、歯ぶらし体が先端に装着される駆動軸と
ハウジングとの間にパッキンを介在させている。そして
ここにおけるパッキンは、駆動軸の往復回動運動と軸方
向の往復運動との両者を許さなくてはならないために、
駆動軸に内周縁が接触し且つハウジングに外周縁が固着
されるものとなっているとともに、軸方向長さの短い円
錐筒状で且つ内周部が内方へ折り返された形状とされて
おり、そしてこの折り返された先端部が駆動軸外周面に
おける環状溝部に接触している。しかし、この形状であ
ると、駆動軸が行なう往復回動運動と軸方向の往復運動
とに対するパッキンによる抵抗、つまりはパッキンの変
形に要するエネルギーが大きく、動力ロスが大きいとい
う欠点を有している。Japanese Patent Publication No. 52-43981 discloses an electric toothbrush capable of selectively causing a toothbrush to perform both axial reciprocating motion and axial reciprocating rotary motion. By the way, in the electric toothbrush, it is essential to adopt a waterproof structure from the use atmosphere, and even if the electric toothbrush is disclosed in the above publication, the toothbrush body is not attached to the drive shaft and the housing. A packing is interposed between them. Since the packing here must allow both reciprocating rotational movement of the drive shaft and axial reciprocating movement,
The inner peripheral edge is in contact with the drive shaft and the outer peripheral edge is fixed to the housing, and it is shaped like a conical cylinder with a short axial length and the inner peripheral part is folded inward. The folded back tip is in contact with the annular groove on the outer peripheral surface of the drive shaft. However, this shape has a drawback in that the resistance to the reciprocating rotational movement of the drive shaft and the reciprocating movement in the axial direction due to the packing, that is, the energy required for the deformation of the packing is large and the power loss is large. .
本発明はこのような点に鑑み為されたものであり、その
目的とするところは防水のためのパッキンによる動力ロ
スが小さい電動歯ぶらしを提供するにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric toothbrush with a small power loss due to a packing for waterproofing.
しかして本発明は、モータと、歯ぶらし体が連結されて
いるとともに回動自在且つ軸方向に移動自在とされてい
る駆動軸と、モータの回転を軸方向の往復運動ならびに
軸まわりの往復回動運動に変換して駆動軸に伝達する運
動変換機構とを備えて、モータ等を収納したハウジング
とこのハウジングから突出する駆動軸とをパッキンで接
続した電動歯ぶらしにおいて、パッキンは、半径よりも
軸方向長さが長く且つ一端が駆動軸の外周面に接してい
る筒部と、この筒部の他端に内周側がほぼ直角な折曲部
を介してつながっているとともに外周側がハウジングに
固着されて上記内周側の軸方向移動を許すたわみが自在
となっている円板部とを有していることに特徴を有する
ものであって、駆動軸の軸回りの往復回動に対しては、
パッキンの筒部が容易にねじれ、駆動軸の軸方向運動に
対しては、円板部のたわみによってパッキンの筒部をた
わませることなく追従するものである。 以下本発明を図示の実施例に基づいて詳述すると、円筒
状に形成されているハウジング１は、その内部に電池９
とモータ５、モータ５の回転運動を往復回動運動や軸方
向の往復運動に変換する運動変換機構等を納めた主ハウ
ジング１０と、この主ハウジング１０の先端面から突出
する駆動軸３及び防水用のパッキン４を覆ってこれらを
保護するキャップ１１とから構成されている。 歯ぶらし体２が先端に連結される駆動軸３は、往復回動
運動と軸方向の往復運動とが選択的になされるものであ
り、モータ５の回転運動をこれら両運動に変換する運動
変換機構について説明すると、これは第５図に示すよう
に、偏心軸６と、カム７、そしてカムフォロア８の３部
材で構成されている。 偏心部６は軸部６１とフェースギア６０とからなるもの
で、主ハウジング１０内に固定される基台１２によって
両端が支持される軸１３が貫通する軸孔６２を備えてい
るもので、フェースギア６０はこの軸孔６２と同心であ
るのに対して、軸部６１は図中e1で示す量だけ偏心した
ものとなっている。そして軸部６１の一端外周縁には、
略半周にわたる係合溝６３が切削されている。 カム７はこれを貫通する貫通孔７２を備えたものである
とともに、一端側がこの貫通孔７２に対してe2だけ偏心
した往復カム部７０、他端側が往復カム部７０の偏心方
向とは逆方向に貫通孔７２に対してe3だけ偏心した回動
カム部７１とされているもので、貫通孔７２の一端開口
縁には突起７３が突設されており、また回動カム部７１
の外周面には第９図から明らかなように軸方向が角度θ
だけ傾いた傾斜面７４が形成されている。 カムフォロア８は上記駆動軸３の一端が固着されるもの
で、カム７における往復カム部７０の外周面に上下の内
周縁が接触する第１フォロア部８０と、カム７における
回動カム部７１の傾斜面７４に両側内面が接触する第２
フォロア部８１とを備えている。 そしてモータ５の出力軸５０に固着されたピニオン５１
にフェースギア６０を噛合させる偏心軸６は、カム７の
貫通孔７２内に軸部６１を遊転自在に嵌合させていると
ともに、軸部６１に形成された係合溝６３にカム７の突
起７３を位置させており、そして主ハウジング１０に支
持台１４及び軸受１５を介して回動自在に且つ軸方向に
摺動自在に支持されている駆動軸３が取り付けられてい
るカムフォロア８は、前述のように第１フォロア部８０
を往復カム部７０に、第２フォロア部８１を回動カム部
７１に接触させている。 ここにおいて、偏心軸６における軸部６１の偏心量e
1と、カム７の往復カム部７０における偏心量e2と、回
動カム部７１における偏心量e3とはいずれも等しくされ
ており、そしてカム７における突起７３が偏心軸６にお
ける半周にわたる係合溝６３の一端に係合する時、第６
図に示すように、偏心軸６の偏心方向と往復カム部７０
との偏心方向とが一致して、軸１３に対する往復カム部
７０の偏心量e4がe1＋e2＝２e1となるとともに、偏心軸
６の偏心方向と回動カム部７１の偏心方向とが互いに逆
方向になって、軸１３に対する回動カム部７１の偏心量
が０となるようにされており、更に突起７３が偏心軸６
における半周にわたる係合溝６３の他端に係合する時、
第７図に示すように、偏心軸６の偏心方向と回動カム部
７１との偏心方向とが一致して、軸１３に対する回動カ
ム部７１の偏心量e5がe1＋e3＝２e1となるとともに、偏
心軸６の偏心方向と往復カム部７０の偏心方向とが互い
に逆方向になって、軸１３に対する往復カム部７０の偏
心量が０となるようにされている。 しかしてモータ５を一方向に回転させて偏心軸６を第６
図に矢印で示す方向に回転させる時、カム７における往
復カム部７０と回動カム部７１の両者のうち、上述のよ
うに軸１３に対しては往復カム部７０のみが偏心したも
のとなるために、偏心軸６及びカム７の回転に伴い、カ
ムフォロア８は第８図に示すように、駆動軸３に往復直
線運動を行なわせるものであり、モータ５を逆方向に回
転させた時には、第７図に示したように軸１３に対して
回動カム部７のみが偏心した状態となるために、この外
周面に傾斜面７４が形成されている回動カム部７１に第
２フォロア部８１を接触させているカムフォロア８は、
第９図に示すように、カム７の回転に伴なって駆動軸３
に軸まわりの往復回動運動を行なわせる。 さて、このように軸方向の往復運動（往復直線運動）と
軸まわりの往復回動運動とが選択的になされる駆動軸３
と、ハウジング１との間の防水を行なうパッキン４は、
第２図に示すように、筒部４０と、筒部１の下端からほ
ぼ直角の折曲部を介して外周側に一体に延出された円板
部４１とを備え、円板部４１の外周縁から大径筒部４２
を介して延出されたフランジ部４３がキャップ１１と主
ハウジング１０との間で挟持固着されており、更に筒部
４０の上端から内方へと延出された小径部４４の内周面
が駆動軸３の外周面に接触するものとされている。尚、
この小径部４４の外周面にはシールリング４５がはめら
れている。 しかしてこのパッキン４においては、駆動軸３の往復回
動運動に対して、筒部４０の高さh1がこの筒部４０の外
径r1よりも大きくて、駆動軸３の回動に伴なう筒部４０
のねじれが許されたものとなっているとともにこのねじ
れを生じさせるのに要するエネルギーが小さくなってお
り、小径部４４が駆動軸３の外周面に接触するのみでパ
ッキン４に対する駆動軸３の回動が許されていることも
あって、パッキン４が駆動軸３の回動に与える抵抗は低
く、動力ロスは小さい。 そして駆動軸３の軸方向の往復運動に対しては、円板部
４１の外径r2と内径r1との差が大きくとられているため
に、第４図に示すように、円板部４１がダイアフラム状
にたわむことによって筒部４０が駆動軸３とともに往復
運動を行なうことを許しており、従ってパッキン４が駆
動軸３の軸方向運動に与える抵抗は低く、動力ロスが小
さいものである。 第１０図乃至第１２図に他の実施例を示す。ここでは外
周縁にフランジ部４３が設けられている円板部４１と、
筒部４０との間に、筒部４０の外径よりも大きい径の第
２筒部４６を設けて、筒部４０の実質長が、筒部４０を
囲む第２筒部４６の高さh2を足した長さとなるようにし
たものである。駆動軸３の回動時における抵抗をできる
だけ低くするには筒部４０の長さ(高さ)h1を長くするこ
とが有効であるが、あまり長くするとハウジング１も長
くなり、使い勝手の点で問題が生じるが、この場合には
筒部４０と第２筒部４６との二重にすることで、ほぼ半
分の長さでするものである。 第１３図以下に更に他の実施例を示す。これは筒部４０
と円板部４１とを備えたパッキン４を２つ用いて、両者
の円板部４１，４１の外周部同士を内周シール部材４７
と外周シール部材４８とで連結するとともに、一方のパ
ッキン４の筒部４０の先端を駆動軸３に接触させ、他方
のパッキン４の筒部４０をハウジング１に固定したもの
である。駆動軸３の軸方向往復運動時における抵抗をで
きるだけ小さくするためには円板部４１の外径と内径の
差をできるだけ大きくすることが好ましいわけである
が、これを大きくすることは円板部４１の外径を大きく
することになり、ハウジング１の太さが増すことになっ
て使い勝手が悪くなるものの、この場合には、２つのパ
ッキン４，４の各円板部４１，４１が夫々たわむことに
なるために、円板部４１の内外径の差が小さくとも、十
分な量のたわみを確保することができるものである。Therefore, the present invention relates to a motor, a drive shaft to which a tooth-splitting body is connected, and which is rotatable and axially movable, and the rotation of the motor. In an electric tooth shaker in which a housing for accommodating a motor and the like and a drive shaft protruding from this housing are connected by a packing, which is provided with a motion converting mechanism for converting into rotary motion and transmitting the motion to the drive shaft, the packing has a radius Longer than the axial length, one end of which is in contact with the outer peripheral surface of the drive shaft, and the other end of which is connected to the other end through a bent portion whose inner peripheral side is at a substantially right angle and whose outer peripheral side is the housing. It is characterized in that it has a disc portion that is fixedly attached to the inner peripheral side and is freely bendable to allow axial movement on the inner peripheral side. On the other hand,
The tubular portion of the packing is easily twisted, and the axial movement of the drive shaft is followed by the flexure of the disc portion without bending the tubular portion of the packing. BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the illustrated embodiment. A cylindrical housing 1 has a battery 9 inside.
And a motor 5, a main housing 10 containing a motion converting mechanism for converting the rotational motion of the motor 5 into a reciprocating rotary motion and a reciprocating motion in the axial direction, a drive shaft 3 protruding from the end surface of the main housing 10, and a waterproofing. And a cap 11 that covers and protects the packing 4 for use. The drive shaft 3 to which the tooth-splitting body 2 is connected at its tip is configured to selectively perform a reciprocating rotary motion and an axial reciprocating motion, and a motion for converting the rotational motion of the motor 5 into these two motions. The conversion mechanism will be described. As shown in FIG. 5, it is composed of three members, an eccentric shaft 6, a cam 7, and a cam follower 8. The eccentric portion 6 is composed of a shaft portion 61 and a face gear 60, and is provided with a shaft hole 62 through which a shaft 13 whose both ends are supported by a base 12 fixed in the main housing 10 passes. The gear 60 is concentric with the shaft hole 62, while the shaft portion 61 is eccentric by the amount indicated by e 1 in the figure. And, on one outer peripheral edge of the shaft portion 61,
The engagement groove 63 is cut over approximately half the circumference. The cam 7 is provided with a through hole 72 penetrating therethrough, one end side of which is a reciprocating cam portion eccentric by e 2 with respect to the through hole 72, and the other end side of which is opposite to the eccentric direction of the reciprocating cam portion 70. Is a rotating cam portion 71 that is eccentric with respect to the through hole 72 by e 3 in the direction. A protrusion 73 is provided at one end opening edge of the through hole 72, and the rotating cam portion 71 is provided.
As can be seen from FIG. 9, the axial direction of the outer peripheral surface of
An inclined surface 74 that is inclined only by is formed. The cam follower 8 has one end of the drive shaft 3 fixed thereto, and includes a first follower portion 80 whose upper and lower inner peripheral edges contact the outer peripheral surface of the reciprocating cam portion 70 of the cam 7, and a rotating cam portion 71 of the cam 7. Second contact between the inner surfaces on both sides of the inclined surface 74
And a follower section 81. The pinion 51 fixed to the output shaft 50 of the motor 5
The eccentric shaft 6 meshing the face gear 60 with the face gear 60 has the shaft portion 61 fitted in the through hole 72 of the cam 7 in a freely rotatable manner, and the engagement groove 63 formed in the shaft portion 61 has the engagement groove 63 of the cam 7 of the cam 7. The cam follower 8 in which the projection 73 is located and to which the drive shaft 3 supported by the main housing 10 via the support base 14 and the bearing 15 so as to be rotatable and slidable in the axial direction is attached, As described above, the first follower unit 80
To the reciprocating cam portion 70, and the second follower portion 81 to the rotating cam portion 71. Here, the eccentric amount e of the shaft portion 61 on the eccentric shaft 6
1 , the amount of eccentricity e 2 of the reciprocating cam portion 70 of the cam 7 and the amount of eccentricity e 3 of the rotating cam portion 71 are equal, and the projection 73 of the cam 7 extends over a half circumference of the eccentric shaft 6. When engaging one end of the mating groove 63, the sixth
As shown in the figure, the eccentric direction of the eccentric shaft 6 and the reciprocating cam portion 70
And the eccentric direction is coincident with, with eccentricity e 4 of the reciprocating cam portion 70 relative to the shaft 13 is e 1 + e 2 = 2e 1 , and the eccentric direction of the eccentric direction and the rotating cam 71 of the eccentric shaft 6 Are arranged in opposite directions so that the eccentric amount of the rotating cam portion 71 with respect to the shaft 13 becomes zero, and the projection 73 is further attached to the eccentric shaft 6.
When engaging the other end of the engaging groove 63 extending over a half circumference of
As shown in FIG. 7, the eccentric direction of the eccentric shaft 6 and the eccentric direction of the rotary cam part 71 coincide with each other, and the eccentric amount e 5 of the rotary cam part 71 with respect to the shaft 13 is e 1 + e 3 = 2e. In addition to being 1 , the eccentric direction of the eccentric shaft 6 and the eccentric direction of the reciprocating cam part 70 are opposite to each other, and the eccentric amount of the reciprocating cam part 70 with respect to the shaft 13 is zero. Then, the motor 5 is rotated in one direction to move the eccentric shaft 6 to the sixth position.
When rotating in the direction indicated by the arrow in the figure, of the reciprocating cam portion 70 and the rotating cam portion 71 of the cam 7, only the reciprocating cam portion 70 is eccentric with respect to the shaft 13 as described above. Therefore, as the eccentric shaft 6 and the cam 7 rotate, the cam follower 8 causes the drive shaft 3 to perform a reciprocating linear motion as shown in FIG. 8. When the motor 5 is rotated in the reverse direction, As shown in FIG. 7, since only the rotating cam portion 7 is eccentric with respect to the shaft 13, the second follower portion is formed on the rotating cam portion 71 having the inclined surface 74 formed on the outer peripheral surface thereof. The cam follower 8 in contact with 81 is
As shown in FIG. 9, as the cam 7 rotates, the drive shaft 3
To make a reciprocating rotary motion about the axis. Now, the drive shaft 3 in which the axial reciprocating motion (reciprocating linear motion) and the reciprocating rotary motion about the shaft are selectively performed in this way.
And the packing 4 for waterproofing between the housing 1 and
As shown in FIG. 2, the tubular portion 40 is provided with a tubular portion 40 and a disc portion 41 integrally extended from the lower end of the tubular portion 1 to the outer peripheral side through a bent portion at a substantially right angle. Large-diameter cylindrical portion 42 from the outer peripheral edge
The flange portion 43 extending through the cap is sandwiched and fixed between the cap 11 and the main housing 10, and the inner peripheral surface of the small diameter portion 44 extending inward from the upper end of the tubular portion 40 is It is supposed to contact the outer peripheral surface of the drive shaft 3. still,
A seal ring 45 is fitted on the outer peripheral surface of the small diameter portion 44. However, in the packing 4, since the height h 1 of the tubular portion 40 is larger than the outer diameter r 1 of the tubular portion 40 with respect to the reciprocating rotational movement of the drive shaft 3, the rotational movement of the drive shaft 3 is prevented. Accompanying tube 40
The twisting of the drive shaft 3 is permitted, and the energy required to generate this twist is small, and the small diameter portion 44 only contacts the outer peripheral surface of the drive shaft 3 so that the drive shaft 3 rotates with respect to the packing 4. Since the movement is permitted, the resistance given to the rotation of the drive shaft 3 by the packing 4 is low, and the power loss is small. With respect to the axial reciprocating movement of the drive shaft 3, the difference between the outer diameter r 2 and the inner diameter r 1 of the disc portion 41 is large, so that as shown in FIG. The tubular portion 40 is allowed to reciprocate together with the drive shaft 3 by bending the portion 41 in a diaphragm shape. Therefore, the resistance given to the axial movement of the drive shaft 3 by the packing 4 is low and the power loss is small. is there. Another embodiment is shown in FIGS. Here, a disk portion 41 having a flange portion 43 provided on the outer peripheral edge,
A second tubular portion 46 having a diameter larger than the outer diameter of the tubular portion 40 is provided between the tubular portion 40 and the tubular portion 40, and the substantial length of the tubular portion 40 is the height h of the second tubular portion 46 surrounding the tubular portion 40. It is the sum of 2 and the length. It is effective to lengthen the length (height) h 1 of the tubular portion 40 in order to reduce the resistance when the drive shaft 3 rotates as much as possible. However, if it is too long, the housing 1 also becomes long, and in terms of usability. Although a problem arises, in this case, the tube portion 40 and the second tube portion 46 are doubled so that the length is almost half. Still another embodiment is shown in FIG. This is the cylinder 40
By using two packings 4 each including a disc portion 41 and a disc portion 41, the outer peripheral portions of the disc portions 41, 41 are sealed with the inner peripheral seal member 47.
And the outer peripheral seal member 48, the tip of the tubular portion 40 of one packing 4 is brought into contact with the drive shaft 3, and the tubular portion 40 of the other packing 4 is fixed to the housing 1. In order to reduce the resistance during the axial reciprocating motion of the drive shaft 3, it is preferable to make the difference between the outer diameter and the inner diameter of the disc portion 41 as large as possible. Although the outer diameter of 41 is increased and the thickness of the housing 1 is increased, the usability is deteriorated, but in this case, the disk portions 41, 41 of the two packings 4, 4 are respectively bent. Therefore, even if the difference between the inner and outer diameters of the disc portion 41 is small, a sufficient amount of deflection can be secured.
以上のように本発明においては、駆動軸がその軸まわり
に往復回動を行う場合には、筒部がその半径よりも軸方
向長さが長くなっているために、筒部が容易にねじれる
とともにこの時にパッキンが与える抵抗は小さいもので
あり、また駆動軸が軸方向の往復動を行う時には、円板
部が軸部とつなっている内周側の軸方向移動を許すもの
であて、筒部が軸方向においてたわむことがないため
に、この時にパッキンが与える抵抗も小さいものであ
り、従って駆動軸の動きがいずれの場合にも動力ロスの
少ない歯ぶらし体の駆動を行なえるものである。As described above, in the present invention, when the drive shaft reciprocally rotates about the shaft, the tubular portion is axially longer than its radius, so that the tubular portion is easily twisted. At the same time, the resistance given by the packing at this time is small, and when the drive shaft reciprocates in the axial direction, it allows axial movement on the inner peripheral side where the disc part is connected to the shaft part. Since the tubular part does not bend in the axial direction, the resistance given by the packing at this time is also small, and therefore, in any case of the movement of the drive shaft, it is possible to drive the toothed body with less power loss. Is.
第１図は本発明一実施例の縦断面図、第２図は同上のパ
ッキンの斜視図、第３図は駆動軸の回動時を示す縦断面
図、第４図は駆動軸の軸方向往復運動時を示す縦断面
図、第５図は運動変換機構の分解斜視図、第６図及び第
７図は同上の偏心軸とカムの正面図、第８図は軸方向往
復運動を示す説明図、第９図(a)(b)(c)(d)は往復回動運
動を示す説明図、第１０図はパッキンの他の例を示す斜
視図、第１１図及び第１２図は同上の動作を示す縦断面
図、第１３図はパッキンの更に他の例を示す分解斜視
図、第１４図及び第１５図は同上の動作を示す縦断面図
であって、１はハウジング、２は歯ぶらし体、３は駆動
軸、４はパッキン、５はモータ、６は偏心軸、７はカ
ム、８はカムフォロア、４０は筒部、４１は円板部を示
す。FIG. 1 is a vertical cross-sectional view of an embodiment of the present invention, FIG. 2 is a perspective view of the same packing, FIG. 3 is a vertical cross-sectional view showing the rotation of the drive shaft, and FIG. 4 is an axial direction of the drive shaft. FIG. 5 is an exploded perspective view of the motion converting mechanism, FIGS. 6 and 7 are front views of the eccentric shaft and the cam, and FIG. 8 is an axial reciprocating motion. FIGS. 9 (a), (b), (c), and (d) are explanatory views showing a reciprocating rotary motion, FIG. 10 is a perspective view showing another example of packing, and FIGS. 11 and 12 are the same as above. FIG. 13 is an exploded perspective view showing still another example of the packing, and FIGS. 14 and 15 are vertical sectional views showing the same operation, in which 1 is a housing and 2 is Tooth brushing body, 3 is a drive shaft, 4 is packing, 5 is a motor, 6 is an eccentric shaft, 7 is a cam, 8 is a cam follower, 40 is a cylinder portion, and 41 is a disc portion.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特公 昭40−3386（ＪＰ，Ｂ１) 実公 昭48−19349（ＪＰ，Ｙ１) 実公 昭52−50938（ＪＰ，Ｙ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Publication No. 40-3386 (JP, B1) Actual Publication No. 48-19349 (JP, Y1) Actual Publication No. 52-50938 (JP, Y2)
Claims (4)
ともに回動自在且つ軸方向に移動自在とされている駆動
軸と、モータの回転を軸方向の往復運動ならびに軸まわ
りの往復回動運動に変換して駆動軸に伝達する運動変換
機構とを備えて、モータ等を収納したハウジングとこの
ハウジングから突出する駆動軸とをパッキンで接続した
電動歯ぶらしにおいて、パッキンは、半径よりも軸方向
長さが長く且つ一端が駆動軸の外周面に接している筒部
と、この筒部の他端に内周側がほぼ直角な折曲部を介し
てつながっているとともに外周側がハウジングに固着さ
れて上記内周側の軸方向移動を許すたわみが自在となっ
ている円板部とを有していることを特徴とする電動歯ぶ
らし。Claim: What is claimed is: 1. A motor, a drive shaft to which a tooth-splitting body is connected, and which is rotatable and axially movable, and rotation of the motor. In an electric tooth shaker in which a housing for accommodating a motor and the like and a drive shaft protruding from this housing are connected by a packing, which is provided with a motion converting mechanism for converting into a dynamic motion and transmitting it to the drive shaft, the packing is Also has a long axial length, one end of which is in contact with the outer peripheral surface of the drive shaft, and the other end of which is connected to the other end of the cylindrical portion through a bent portion whose inner peripheral side is at a substantially right angle and whose outer peripheral side is connected to the housing. An electric tooth duster having a disc portion that is fixed and is flexible to allow axial movement on the inner peripheral side.
されたものであることを特徴とする特許請求の範囲第１
項記載の電動歯ぶらし。2. The packing according to claim 1, characterized in that the tubular portion and the disc portion are integrally formed.
The electric toothpaste described in the item.
と、この内周側筒部を囲むとともに一端が内周側筒部の
一端につながっている外周側筒部とからなり、円板部の
内周側は外周側の筒部の他端に折曲部を介してつながっ
ていることを特徴とする特許請求の範囲第１項記載の電
動歯ぶらし。3. A cylindrical portion of the packing comprises an inner peripheral cylindrical portion and an outer peripheral cylindrical portion surrounding the inner peripheral cylindrical portion and having one end connected to one end of the inner peripheral cylindrical portion. The electric tooth flapping according to claim 1, wherein the inner peripheral side of the plate part is connected to the other end of the outer peripheral side cylinder part through a bent part.
部とを備えているとともに筒部がハウジングに固着され
た他のパッキンの円板部の外周側に連結されて、この他
のパッキンを介してハウジングに固着されていることを
特徴とする特許請求の範囲第１項記載の電動歯ぶらし。4. An outer peripheral side of a disc portion of a packing is provided with a disc portion and a tubular portion, and the tubular portion is connected to the outer peripheral side of the disc portion of another packing fixed to the housing, The electric tooth duster according to claim 1, characterized in that it is fixed to the housing through another packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61138997A JPH0634796B2 (en) | 1986-06-14 | 1986-06-14 | Electric toothpaste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61138997A JPH0634796B2 (en) | 1986-06-14 | 1986-06-14 | Electric toothpaste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62295610A JPS62295610A (en) | 1987-12-23 |
| JPH0634796B2 true JPH0634796B2 (en) | 1994-05-11 |
Family
ID=15235065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61138997A Expired - Fee Related JPH0634796B2 (en) | 1986-06-14 | 1986-06-14 | Electric toothpaste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0634796B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112007002038B4 (en) * | 2006-08-29 | 2017-01-26 | Omron Healthcare Co., Ltd. | Electric toothbrush |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2556031Y2 (en) * | 1990-05-23 | 1997-12-03 | リコーエレメックス株式会社 | Electric toothbrush device |
| JP3310306B2 (en) * | 1990-12-25 | 2002-08-05 | 松下電工株式会社 | Electric dental floss |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4819349U (en) * | 1971-07-13 | 1973-03-05 | ||
| JPS561139Y2 (en) * | 1975-10-08 | 1981-01-12 |
-
1986
- 1986-06-14 JP JP61138997A patent/JPH0634796B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112007002038B4 (en) * | 2006-08-29 | 2017-01-26 | Omron Healthcare Co., Ltd. | Electric toothbrush |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62295610A (en) | 1987-12-23 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |