JPH07265560A - Reciprocating type electric shaver - Google Patents
Reciprocating type electric shaverInfo
- Publication number
- JPH07265560A JPH07265560A JP5756894A JP5756894A JPH07265560A JP H07265560 A JPH07265560 A JP H07265560A JP 5756894 A JP5756894 A JP 5756894A JP 5756894 A JP5756894 A JP 5756894A JP H07265560 A JPH07265560 A JP H07265560A
- Authority
- JP
- Japan
- Prior art keywords
- mover
- reciprocating
- reciprocating electric
- spring
- central
- 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.)
- Granted
Links
Landscapes
- Dry Shavers And Clippers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、往復運動式の電動機を
用いた往復式電気かみそりに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating electric shaver using a reciprocating electric motor.
【０００２】[0002]
【従来の技術】従来からドイツ特許公報１，１５１，３
０７号（以下従来例１という）と、米国特許公報３，２
４３，６１５号（以下従来例２という）が知られてい
る。上記従来例１、従来例２はいずれも鉄芯を備えた可
動子と電磁石からなる固定子により構成された往復駆動
電動機（バイブレータ）を備えたものであり、従来例１
は３つの可動子を、従来例２は２つの刃ヘッド、可動
刃、可動子を備え、いずれの従来例においても１つの固
定子で各可動子を往復駆動させるものである。2. Description of the Related Art Conventionally, German Patent Publications 1,151,3
No. 07 (hereinafter referred to as Conventional Example 1) and US Pat.
No. 43,615 (hereinafter referred to as Conventional Example 2) is known. The conventional example 1 and the conventional example 2 each include a reciprocating drive electric motor (vibrator) including a mover having an iron core and a stator including an electromagnet.
Is provided with three movable elements, and Conventional Example 2 is provided with two blade heads, movable blades, and movable elements. In each of the conventional examples, one stator reciprocally drives each movable element.
【０００３】上記の従来例のように、１つの固定子で複
数個の可動子を往復駆動する場合、各々の可動子の振動
数（位相）が一致しないと、振動のアンバランスが発生
し、往復駆動電動機全体が激しい振動を起こし、このた
め、電気かみそり全体が激しく振動し、髭剃りが不快と
なり、また、手に振動が伝わってしびれてしまいこの点
でも不快となっていた。When a plurality of movers are reciprocally driven by one stator as in the conventional example described above, if the frequencies (phases) of the movers do not match, vibration imbalance occurs, The entire reciprocating drive motor violently vibrates, which violently vibrates the entire electric razor, which makes the shaving unpleasant, and also causes the vibration to be transmitted to the hand and causes numbness.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記の従来例
の問題点に鑑みて発明したものであって、その目的とす
るところは、複数の刃ヘッドを備えた往復式電気かみそ
りにおいて、振動のアンバランスを抑え、振動を低減で
きる往復式電気かみそりを提供するにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a reciprocating electric shaver having a plurality of blade heads with a vibration. The purpose is to provide a reciprocating electric razor that suppresses the unbalance of the machine and reduces vibration.
【０００５】[0005]
【課題を解決するための手段】上記従来例の問題点を解
決して本発明の目的を達成するため、本発明の往復式電
気かみそりは、複数の刃ヘッドＨを備えた往復式電気か
みそりにおいて、固定子１に対して可動子２を往復動さ
せるための往復運動式の電動機Ａを有し、往復運動式の
電動機Ａが各刃ヘッドＨの可動刃に対応した複数の可動
子２を有し、これらの複数の可動子２を１つの固定子１
で駆動するように設定し、各可動子２のＫ／Ｍ（Ｋ：ば
ね定数、Ｍ：質量）を略等しくして、可動子２の固有振
動数を略等しくして成ることを特徴とするものである。In order to solve the problems of the above-mentioned conventional examples and to achieve the object of the present invention, the reciprocating electric shaver of the present invention is a reciprocating electric shaver having a plurality of blade heads H. , A reciprocating electric motor A for reciprocating the mover 2 with respect to the stator 1, and the reciprocating electric motor A has a plurality of movers 2 corresponding to the movable blades of each blade head H. The plurality of movers 2 into one stator 1.
It is characterized in that the movable elements 2 are set to be driven by K, and K / M (K: spring constant, M: mass) of each movable element 2 is made substantially equal, and the natural frequency of the movable element 2 is made substantially equal. It is a thing.
【０００６】そして、往復運動式の電動機Ａをリニアモ
ータにより構成し、可動子２が永久磁石８を備え、固定
子１が電磁石により構成してあることが好ましい。ま
た、各刃ヘッドＨに対応する可動子２の永久磁石８の極
性を異ならせた構成としたり、あるいは、各刃ヘッドＨ
に対応する可動子２の永久磁石８の極性を同一にした構
成とすることも好ましい。また、各刃ヘッドＨに対応す
る可動子２の推力を異ならせることも好ましい。そし
て、可動子２の推力を異ならせるに当たっては、永久磁
石８の幅又は厚みを異ならせたり、あるいは、永久磁石
８の磁束密度を異ならせたり、あるいは、可動子２のヨ
ーク９の寸法を異ならせたり、あるいは、可動子２のヨ
ーク９の材質を異ならせたり、あるいは、永久磁石８と
電磁石との間のギャップ１２長さを異ならせたりするこ
とが好ましい。It is preferable that the reciprocating electric motor A is composed of a linear motor, the mover 2 is equipped with a permanent magnet 8 and the stator 1 is composed of an electromagnet. Further, the permanent magnets 8 of the mover 2 corresponding to each blade head H may have different polarities, or each blade head H
It is also preferable that the polarities of the permanent magnets 8 of the mover 2 corresponding to the above are set to be the same. It is also preferable to make the thrust of the mover 2 corresponding to each blade head H different. When the thrust of the mover 2 is changed, the width or thickness of the permanent magnet 8 is changed, the magnetic flux density of the permanent magnet 8 is changed, or the size of the yoke 9 of the mover 2 is changed. Preferably, the yoke 9 of the mover 2 is made of a different material, or the length of the gap 12 between the permanent magnet 8 and the electromagnet is made different.
【０００７】また、中央刃ヘッドＨと、該中央刃ヘッド
Ｈの両側に配置した側刃ヘッドＨを備え、中央刃ヘッド
Ｈに対応する中央可動子２ｃの運動方向と各側刃ヘッド
Ｈに対応する側可動子２ｂの運動方向とを異ならせると
共に、中央可動子２ｃの質量と両側可動子２ｂの総質量
とを等しくして成る構成とすることも好ましい。そし
て、中央可動子２ｃはかみそり本体の中心軸を通って往
復動するものであり、中央可動子２ｃと両側可動子２ｄ
の間にばね５を配設し、該ばね５をかみそり本体の中心
軸を含む鉛直面内に配置した構成とすることも好まし
い。ここで、往復運動式の電動機Ａの重心を含む水平面
と、かみそり本体の中心軸を含む鉛直面との交線上にば
ね５を配置することも好ましい。Further, it is provided with a central blade head H and side blade heads H arranged on both sides of the central blade head H, corresponding to the moving direction of the central mover 2c corresponding to the central blade head H and each side blade head H. It is also preferable that the moving direction of the side movable element 2b is made different and the mass of the central movable element 2c and the total mass of the both side movable elements 2b are made equal. The central mover 2c reciprocates through the central axis of the razor body, and the central mover 2c and the two-side mover 2d.
It is also preferable to dispose the spring 5 between the two and arrange the spring 5 in the vertical plane including the central axis of the razor body. Here, it is also preferable to arrange the spring 5 on a line of intersection between a horizontal plane including the center of gravity of the reciprocating electric motor A and a vertical plane including the central axis of the razor body.
【０００８】また、両側可動子２ｄを往復方向と直交方
向で連結し、この連結部２６と中央可動子２ｃとの間に
ばね５を配置することも好ましい。また、可動子２を、
往復動方向にのみ変位可能な板状のばね材４０によって
固定部に支持して、可動子２と固定子１との間のギャッ
プ１２を保持し、該ばね材４０にて可動子２のばね定数
Ｋを設定して成る構成とすることも好ましい。It is also preferable to connect the movable elements 2d on both sides in a direction orthogonal to the reciprocating direction and to dispose the spring 5 between the connecting portion 26 and the central movable element 2c. In addition, the mover 2
A plate-shaped spring member 40, which is displaceable only in the reciprocating direction, supports the fixed portion by a plate-shaped spring member 40 to hold the gap 12 between the mover 2 and the stator 1. It is also preferable that the constant K is set.
【０００９】また、各可動子２の間に往復動方向にのみ
変位可能なばね５を設けて各可動子２を連結し、該ばね
５にて可動子２のばね定数Ｋを設定して成ることも好ま
しい。Further, a spring 5 which can be displaced only in the reciprocating direction is provided between the movable elements 2 to connect the movable elements 2 and the spring 5 sets a spring constant K of the movable element 2. Is also preferable.
【００１０】[0010]
【作用】しかして、上記のような構成の本発明にあって
は、複数の可動子２を１つの固定子１で駆動するように
設定したものにおいて、各可動子２のＫ／Ｍ（Ｋ：ばね
定数、Ｍ：質量）を略等しくして、可動子２の固有振動
数を略等しくすることで、多ヘッドの振幅位相は完全に
バランスが取られることになる。In the present invention having the above-described structure, however, in the case where the plurality of movers 2 are set to be driven by one stator 1, the K / M (K (K : Spring constant, M: Mass) are made substantially equal and the natural frequencies of the mover 2 are made substantially equal, so that the amplitude and phase of the multiple heads are perfectly balanced.
【００１１】そして、往復運動式の電動機Ａをリニアモ
ータにより構成し、可動子２が永久磁石８を備え、固定
子１が電磁石により構成してあるので、鉄芯と電磁石と
からなるバイブレータに比べて、電気かみそりに好適な
高振動数が得られると共に、振動数の制御精度が高く、
電動機を小型化できることになり、また、磁気力の水平
方向成分がばね定数Ｋを決定する要素となる。Since the reciprocating electric motor A is composed of a linear motor, the mover 2 is provided with a permanent magnet 8 and the stator 1 is composed of an electromagnet, it is compared with a vibrator composed of an iron core and an electromagnet. Therefore, a high frequency suitable for an electric razor is obtained, and the frequency control accuracy is high.
The motor can be downsized, and the horizontal component of the magnetic force is a factor that determines the spring constant K.
【００１２】また、各刃ヘッドＨに対応する可動子２の
永久磁石８の極性を異ならせた構成としたことで、固定
子１に電流を流すと可動子２の往復運動の位相は逆転し
反対方向の移動となり、このことにより振動方向が丁度
逆になって打ち消し合うため振動が低減することにな
る。また、各刃ヘッドＨに対応する可動子２の永久磁石
８の極性を同一にした構成とすると、可動子２の形状の
統一化がなされ、組立性、部品設計等のコスト低減につ
ながることになる。Further, since the polarities of the permanent magnets 8 of the mover 2 corresponding to the respective blade heads H are made different, the phase of the reciprocating motion of the mover 2 is reversed when a current is applied to the stator 1. The movement is in the opposite direction, which causes the vibration directions to be exactly opposite and cancel each other out, thereby reducing the vibration. Further, if the permanent magnets 8 of the mover 2 corresponding to each blade head H are made to have the same polarity, the shape of the mover 2 is unified, which leads to cost reduction in assemblability, part design, and the like. Become.
【００１３】そして、多ヘッドにおいて各ヘッドの機能
が異なる場合、例えば、一方の可動子２でネット刃１個
を、他方の可動子２でネット刃１個とスリット刃１個と
を連結させた際、髭切断により負荷はネット刃１個のも
のに比べてネット刃１個とスリット刃１個の方が大とな
り、この場合、より快適な切れ味を確保するためには負
荷の大きな方の駆動パワーを大にする必要がある。負荷
の大きさに応じた駆動パワーを得るために、各刃ヘッド
Ｈに対応する可動子２の推力を異ならせることで、対応
できるものである。そして、永久磁石８と電磁石の磁気
推力を異ならせるに当たっては、永久磁石８の幅又は厚
みを異ならせる方式を採用することで、つまり、推力を
大にする側を幅又は厚み又は長さを大にすることで対応
できる。また、永久磁石８の磁束密度を異ならせること
で、つまり、永久磁石８の材質で対処する方式を採用す
ることで、推力を大にする側を磁束密度の大きな材質に
することで対応することができる。また、可動子２のヨ
ーク９の寸法を異ならせることで対応することができ
る。つまり、ヨーク形状を変えることで、例えば高さ寸
法を異ならせることで、電磁石と永久磁石８とヨーク９
とにより形成される磁路の磁気抵抗を異ならせ、このこ
とにより上記各刃ヘッドＨに対応する可動子２の推力を
異ならせることができる。また、可動子２のヨーク９の
材質を異ならせることで、つまり、推力が大きな程強磁
性体を使うことで対応することができる。また、永久磁
石８と電磁石との間のギャップ１２長さを異ならせるこ
とで、つまり、推力が大きい程ギャップ１２を小とする
ことで対応することができる。When the heads of the multiple heads have different functions, for example, one mover 2 connects one net blade and the other mover 2 connects one net blade and one slit blade. When cutting the beard, the load of one net blade and one slit blade becomes larger than that of one net blade, and in this case, the driving of the one with a larger load is necessary to ensure a more comfortable sharpness. You need to increase your power. In order to obtain the driving power according to the magnitude of the load, it is possible to deal with it by changing the thrust of the mover 2 corresponding to each blade head H. Then, in making the magnetic thrust of the permanent magnet 8 different from that of the electromagnet, a method of making the width or thickness of the permanent magnet 8 different is adopted, that is, the width, thickness or length on the side where the thrust is increased is increased. Can be dealt with. In addition, by making the magnetic flux density of the permanent magnets 8 different, that is, by adopting a method of dealing with the material of the permanent magnets 8, it is possible to deal with the material having a large magnetic flux density on the side of increasing the thrust. You can Further, it is possible to cope with this by changing the size of the yoke 9 of the mover 2. That is, by changing the shape of the yoke, for example, by changing the height dimension, the electromagnet, the permanent magnet 8, and the yoke 9 are changed.
The magnetic reluctance of the magnetic path formed by and can be made different, and thus the thrust of the mover 2 corresponding to each blade head H can be made different. Further, it can be dealt with by changing the material of the yoke 9 of the mover 2, that is, by using a ferromagnetic material as the thrust is larger. Further, it can be dealt with by making the length of the gap 12 between the permanent magnet 8 and the electromagnet different, that is, by making the gap 12 smaller as the thrust becomes larger.
【００１４】また、中央刃ヘッドＨと、該中央刃ヘッド
Ｈの両側に配置した側刃ヘッドＨを備え、中央刃ヘッド
Ｈに対応する中央可動子２ｃの運動方向と各側刃ヘッド
Ｈに対応する側可動子２ｄの運動方向とを異ならせると
共に、中央可動子２ｃの質量と両側可動子２ｄの総質量
とを等しくすると、運動方向の振動バランスが取れ、往
復方向の異常振動が飛躍的に低減されることになる。ま
た、両側可動子２ｄによる偶力は方向が互いに逆になっ
て打ち消し合うためかみそり本体の中心軸回りの偶力を
低減できることになる。Further, it is provided with a central blade head H and side blade heads H arranged on both sides of the central blade head H, corresponding to the moving direction of the central mover 2c corresponding to the central blade head H and each side blade head H. When the moving direction of the side moving element 2d is made different and the mass of the central moving element 2c and the total mass of the both side moving elements 2d are made equal, vibration balance in the moving direction is achieved and abnormal vibration in the reciprocating direction is dramatically Will be reduced. Further, the couples generated by the two-side mover 2d have directions opposite to each other and cancel each other, so that the couple around the central axis of the razor body can be reduced.
【００１５】また、中央可動子２ｃはかみそり本体の中
心軸を通って往復動するものであり、中央可動子２ｃと
両側可動子２ｄの間にばね５を配設し、該ばね５をかみ
そり本体の中心軸を含む鉛直面内に配置した構成とする
ことで、中央可動子２ｃ及び両側可動子２ｄの力の伝達
がばねを介してなされ、その位置が中央可動子２ｃの中
心面上にあるので、力伝達による偶力の発生を抑えるこ
とができることになる。また、ばね５が可動子２間に設
置でき、コンパクト化がはかれる。更に、一方の可動刃
３の負荷が大きく振幅が急激に減少しようとした時に、
ばね５によりもう一方の可動刃３の可動子２を介してこ
の減少を抑えようとする力が働き、片方のみの振幅減少
を防ぎ、常にバランスの取れた均一な振幅量にできて、
切れ味の向上に結びつけることができる。The central mover 2c reciprocates through the central axis of the razor body. A spring 5 is arranged between the central mover 2c and the two side movers 2d, and the spring 5 is attached to the razor body. By arranging it in a vertical plane including the central axis of, the force of the central mover 2c and the two-sided mover 2d is transmitted through the spring, and its position is on the central plane of the central mover 2c. Therefore, it is possible to suppress the generation of couples due to force transmission. In addition, the spring 5 can be installed between the movers 2, and the size can be reduced. Furthermore, when the load of one movable blade 3 is large and the amplitude is about to decrease suddenly,
The spring 5 exerts a force to suppress this decrease via the mover 2 of the other movable blade 3, prevents the decrease in the amplitude of only one, and makes it possible to obtain a balanced and uniform amplitude amount at all times.
It can be linked to improved sharpness.
【００１６】また、往復運動式の電動機Ａの重心を含む
水平面と、ばね５をかみそり本体の中心軸を含む鉛直面
との交線上にばね５を配置すると、かみそり本体の前後
方向（厚さ）軸廻りの偶力が低減できる。すなわち、中
央可動子２ｃから両側可動子２ｂに力が伝達するばね５
がこの重心位置と一致するため、上記の作用をすること
になる。When the spring 5 is arranged on the intersection of the horizontal plane including the center of gravity of the reciprocating electric motor A and the vertical plane including the central axis of the razor body, the razor body is oriented in the front-back direction (thickness). The couple around the shaft can be reduced. That is, the spring 5 for transmitting the force from the central mover 2c to the two side movers 2b.
Coincides with the position of the center of gravity, so that the above-mentioned action is performed.
【００１７】また、両側可動子２を往復方向と直交方向
で連結し、この連結部２６と中央可動子２ｃとの間にば
ね５を配置することで、両側可動子２ｄの部品点数の削
減、及びばね５の設置がコンパクト化できることにな
る。また、可動子２を、往復動方向にのみ変位可能な板
状のばね材４０によって固定部に支持して、可動子２と
固定子１との間のギャップ１２を保持し、該ばね材４０
にて可動子２のばね定数Ｋを設定することで、各可動子
２のＫ／Ｍを略一定にするに当たり、簡単な構成で達成
できることになる。Further, by connecting the two-side mover 2 in a direction orthogonal to the reciprocating direction and disposing the spring 5 between the connecting portion 26 and the central mover 2c, the number of parts of the both-side mover 2d can be reduced. And the installation of the spring 5 can be made compact. Further, the mover 2 is supported by the fixed portion by a plate-shaped spring member 40 that can be displaced only in the reciprocating direction, and the gap 12 between the mover 2 and the stator 1 is held.
By setting the spring constant K of the mover 2, the K / M of each mover 2 can be made substantially constant with a simple configuration.
【００１８】また、各可動子２の間に往復動方向にのみ
変位可能なばね５を設けて各可動子２を連結し、該ばね
５にて可動子２のばね定数Ｋを設定することで、各可動
子２のＫ／Ｍを略一定にするに当たり、簡単な構成で達
成できることになる。Further, a spring 5 which can be displaced only in the reciprocating direction is provided between the movable elements 2 to connect the movable elements 2, and the spring 5 sets the spring constant K of the movable element 2. In order to keep K / M of each mover 2 substantially constant, it can be achieved with a simple configuration.
【００１９】[0019]
【実施例】以下本発明を添付図面に示す実施例に基づい
て詳述する。図１、図２にはそれぞれ本発明の往復式電
気かみそりの要部の正面断面図、要部の側面断面図を示
し、図３には駆動部となる往復運動式の電動機Ａ及び可
動刃３の組立状態の斜視図を示し、図４には往復運動式
の電動機Ａの分解斜視図を示している。２は可動子であ
って、永久磁石８とヨーク９（バックヨーク）とこれら
を一体化する骨組み部材１０とで構成してある。ヨーク
９は磁性材料であって永久磁石８が接着してある。１は
固定子で磁性材料の焼結体や磁性材料の鉄板を積層した
ものに巻線１１を施した電磁石により構成してある。電
磁石により構成した固定子１は可動子２に設けた永久磁
石８とギャップ１２を隔てて面対向している。１３は上
記ギャップ１２を確保するための連結板であり、連結板
１３の上端部をシャーシ７にねじ具１５により固着する
と共に連結板１３の下端部を可動子２にねじ具１５によ
り固着して連結板１２によりシャーシ７と可動子２を連
結している。固定子１を構成する電磁石はねじ具１４に
よりシャーシ７に固定してある。連結板１３は可動子２
の往復動方向にのみ変位可能なばね材（板ばね）４０に
より構成してあり、ここで、固定子１である電磁石の電
流方向を交番にすることで、可動子２に取付けた永久磁
石８が往復方向に移動するようになっていていわゆるリ
ニアモータと称される往復運動式の電動機Ａを構成して
いる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. 1 and 2 respectively show a front sectional view and a side sectional view of a main part of a reciprocating electric shaver according to the present invention, and FIG. 3 shows a reciprocating electric motor A and a movable blade 3 as a driving part. FIG. 4 shows a perspective view of the assembled state, and FIG. 4 shows an exploded perspective view of the reciprocating electric motor A. Reference numeral 2 denotes a mover, which is composed of a permanent magnet 8, a yoke 9 (back yoke), and a frame member 10 that integrates them. The yoke 9 is a magnetic material and the permanent magnet 8 is adhered thereto. A stator 1 is composed of an electromagnet in which a winding 11 is formed on a laminated body of a sintered body of a magnetic material or an iron plate of a magnetic material. The stator 1 formed of an electromagnet faces the permanent magnet 8 provided on the mover 2 with a gap 12 in between. Reference numeral 13 denotes a connecting plate for securing the above-mentioned gap 12. The upper end of the connecting plate 13 is fixed to the chassis 7 with a screw 15 and the lower end of the connecting plate 13 is fixed to the mover 2 with a screw 15. The connecting plate 12 connects the chassis 7 and the mover 2. The electromagnet forming the stator 1 is fixed to the chassis 7 with a screw tool 14. The connecting plate 13 is the mover 2
Of the permanent magnet 8 attached to the mover 2 by alternating the current directions of the electromagnets that are the stators 1 here. Are configured to move in a reciprocating direction and constitute a reciprocating electric motor A called a so-called linear motor.
【００２０】可動子２は複数個設けてあり、添付図面に
示す実施例では２個の可動子２ａ、２ｂが設けてある。
可動子２には駆動子１７が設けてあり、駆動子１７には
可動刃３を上下移動自在に取付けてあって、可動刃３は
押し上げばね１８により上方に弾性的に押し上げられて
いて可動刃３をネット刃２１に弾接している。また、２
２はスリット刃であり、３ａはスリット刃用の可動刃で
あり、このスリット刃用の可動刃３ａは一方の駆動子１
７に設けたスリット刃用の駆動子１７ａにより駆動され
るようになっている。本実施例においては、可動刃３と
ネット刃２１の組により構成されるヘッドＨが２つ、ス
リット刃２２とスリット刃用の可動刃３ａにより構成さ
れるヘッドＨが１つの合計３ヘッド構成となっている。
ここで駆動系の質量Ｍは可動子２、駆動子１７、可動刃
３の合計質量である。また、本実施例においては各刃ヘ
ッドＨに対応する可動子２の永久磁石８の極性を異なら
せてあり、この結果、各可動子２の往復方向が逆にな
り、振動を低減できるようになっている。A plurality of movers 2 are provided, and in the embodiment shown in the accompanying drawings, two movers 2a and 2b are provided.
The mover 2 is provided with a driver 17, the movable blade 3 is attached to the driver 17 so as to be vertically movable, and the movable blade 3 is elastically pushed upward by a push-up spring 18 3 is in elastic contact with the net blade 21. Also, 2
2 is a slit blade, 3a is a movable blade for the slit blade, and the movable blade 3a for this slit blade is one of the driver elements 1
It is adapted to be driven by a slit blade driver 17a provided in FIG. In this embodiment, there are a total of three heads, that is, two heads H configured by the movable blade 3 and the net blade 21 and one head H configured by the slit blade 22 and the movable blade 3a for the slit blade. Has become.
Here, the mass M of the drive system is the total mass of the mover 2, the driver 17, and the movable blade 3. Further, in this embodiment, the polarities of the permanent magnets 8 of the mover 2 corresponding to the respective blade heads H are made different, and as a result, the reciprocating directions of the movers 2 are reversed so that the vibration can be reduced. Has become.
【００２１】一方の可動子２ａの他方の可動子２ｂとの
対向側面部には可動子２ａの移動方向の両端部にばね受
け部１６ａ、１６ｂが突設してあり、また、他方の可動
子２ｂの一方の可動子２ａとの対向側面部には可動子２
ｂの移動方向の中央部にばね受け部１６ｃが設けてあ
る。そして、対向するばね受け部１６ａとばね受け部１
６ｃとの間及び対向するばね受け部１６ｂとばね受け部
１６ｃとの間にそれぞれ固有振動数設定ばね５が介在し
てあって、各固有振動数設定ばね５の両端部をそれぞれ
対向するばね受け部１６ａとばね受け部１６ｃ及び対向
するばね受け部１６ｂとばね受け部１６ｃに弾接してい
る。この固有振動数設定ばね５は各可動子２の固有振動
数ｆ＝（１／２π）・（Ｋ／Ｍ）1/2 のＫを決める一つ
の要因Ｋｃとなる。ここで、Ｋを決めるその他の要因と
しては、連結板１３のばね定数Ｋｂ及び磁気力の水平方
向成分Ｋｍが挙げられる。つまり、Ｋ＝Ｋｂ＋Ｋｍ＋Ｋ
ｃである。Spring receiving portions 16a and 16b are provided at both end portions in the moving direction of the mover 2a on the side surface of the one mover 2a facing the other mover 2b, and the other mover 2a. The mover 2 is provided on the side surface of the 2b facing the one mover 2a.
A spring receiving portion 16c is provided at the center of the moving direction of b. Then, the spring receiving portion 16a and the spring receiving portion 1 which are opposed to each other.
6c, and the natural frequency setting springs 5 are interposed between the opposing spring receiving portions 16b and 16c, respectively, and both ends of the natural frequency setting springs 5 are opposed to each other. It elastically contacts the portion 16a and the spring receiving portion 16c, and the opposing spring receiving portion 16b and the spring receiving portion 16c. The natural frequency setting spring 5 is one factor Kc that determines K of the natural frequency f = (1 / 2π) · (K / M) 1/2 of each mover 2. Here, other factors that determine K include the spring constant Kb of the connecting plate 13 and the horizontal component Km of the magnetic force. That is, K = Kb + Km + K
c.
【００２２】２３は可動子２の速度、変位、加速度のい
ずれかを検出するためのセンサー磁石であって可動子２
の側面に設けてあり、センサー磁石２３のＮ極とＳ極と
を可動子２の往復方向に並設して設置してある。該可動
子２に設けたセンサー磁石２３と対面するシャーシ７の
部分（つまり、シャーシ７の可動子２の往復移動方向と
平行する面）に検知手段４となる検知センサー４ａが配
設してある。本実施例では速度を検知するもので、検知
センサー４ａは磁気コイルの非接触式である（なお、実
施例では検知手段４として磁気感応素子による非接触式
としたが、検知手段４としては光感応素子による非接触
式であってもよい）。つまり、検知センサー４ａは、Ｎ
極とＳ極を並設した可動子２に設けたセンサー磁石２３
に対面するようにシャーシ７側に配設して磁束が検知セ
ンサー４ａのセンサーコイルを通過するようにする。こ
こで、可動子２と共にセンサー磁石２３が運動すると、
検知センサー４ａを構成するセンサーコイルには誘起電
圧が発生する。本実施例では誘起電圧は正弦波（ｓｉｎ
波）状に発生する。すなわち、可動子２の運動速度が最
大となる振幅の中央位置で正弦波の頂点となり、可動子
２の振幅が減少すると運動速度も比例して減少し、正弦
波の頂点が低くなる。つまり、誘起電圧の正弦波の大き
さで可動子２の運動速度を判定できるのである。Reference numeral 23 denotes a sensor magnet for detecting any one of speed, displacement and acceleration of the mover 2.
The sensor magnet 23 has N and S poles arranged side by side in the reciprocating direction of the mover 2. A detection sensor 4a serving as a detection means 4 is provided at a portion of the chassis 7 facing the sensor magnet 23 provided on the mover 2 (that is, a surface parallel to the reciprocating movement direction of the mover 2 of the chassis 7). . In the present embodiment, the speed is detected, and the detection sensor 4a is a non-contact type of a magnetic coil (note that the detection means 4 is a non-contact type using a magnetic sensitive element, but the detection means 4 is an optical type). It may be a non-contact type with a sensitive element). That is, the detection sensor 4a is N
Sensor magnet 23 provided on the mover 2 in which the pole and the S pole are arranged in parallel.
The magnetic flux passes through the sensor coil of the detection sensor 4a by being disposed on the chassis 7 side so as to face the. Here, when the sensor magnet 23 moves together with the mover 2,
An induced voltage is generated in the sensor coil forming the detection sensor 4a. In this embodiment, the induced voltage is sinusoidal (sin).
Wave) occurs. That is, the sine wave peaks at the center of the amplitude where the moving speed of the mover 2 is maximum, and when the moving speed of the mover 2 decreases, the moving speed also decreases proportionately, and the sine wave peak decreases. That is, the moving speed of the mover 2 can be determined by the magnitude of the sine wave of the induced voltage.
【００２３】６は往復式電動機Ａであるリニアモータを
制御する制御部であり、２５は電池である。次に、本発
明における往復式電動機（リニア駆動方式）を用いた電
気かみそりの基本動作を説明する。可動子２は永久磁石
８と電磁石との吸引、反発力により移動するが、その移
動方向は連結板１３により電気かみそりの往復運動方向
にのみ移動可能となっている。固定子１を構成する電磁
石の巻線１１は実施例においては１本であり、往復運動
の右方向運動と左方向運動では巻線１１に与える電流の
向きを反転させる。つまり、移動方向に推進力が働く方
向に電流を流すのである。電流を流すタイミングは、前
述した検知手段４を構成する検知センサー４ａにより判
断する。振幅と速度信号と電流のタイミングは、図９の
ように表される。本発明では前述の検知手段４の働きに
より振幅の変動を速度信号の変動で判断できる。速度信
号の変動を検知すると、例えば速度が減少したと判断す
ると、次の半周期では速度の減少を元に戻そうとして入
力電流を増加させるように制御部６により制御する。入
力電流を増加すると振幅が増加する。すなわち、速度も
増加するのである。このようにして振幅の減少を抑えよ
うと振幅制御をするのである。Reference numeral 6 is a control unit for controlling a linear motor which is a reciprocating electric motor A, and 25 is a battery. Next, the basic operation of the electric shaver using the reciprocating motor (linear drive system) in the present invention will be described. The mover 2 moves due to the attraction and repulsion of the permanent magnet 8 and the electromagnet, but the moving direction thereof can be moved only in the reciprocating direction of the electric shaver by the connecting plate 13. The number of windings 11 of the electromagnet constituting the stator 1 is one in the embodiment, and the direction of the current applied to the winding 11 is reversed in the rightward and leftward reciprocating movements. That is, the electric current flows in the direction in which the propulsive force acts in the moving direction. The timing at which the current is passed is determined by the detection sensor 4a included in the detection means 4 described above. The timing of the amplitude, speed signal and current is represented as shown in FIG. In the present invention, the fluctuation of the amplitude can be judged by the fluctuation of the speed signal by the function of the detecting means 4 described above. When a change in the speed signal is detected, for example, when it is determined that the speed has decreased, the control unit 6 controls the input current to increase in an attempt to restore the decrease in the speed in the next half cycle. The amplitude increases with increasing input current. That is, the speed also increases. In this way, the amplitude is controlled to suppress the decrease in the amplitude.
【００２４】図８には制御回路のブロック図を示してい
る。Ａは往復運動式の電動機（すなちリニア駆動部）で
あり、６は制御部である。制御部６には往復運動式の電
動機Ａに設けた検知手段４のセンサー出力電圧（正弦波
形）を基準電圧と比較してその差から速度を判断する速
度検知部３０が設けてあり、また、速度検知部３０で判
断した速度から入力電流を決定するための入力電流判定
部３１が設けてあり、入力電流判定部３１で決定された
入力電流の信号は電流入力部３２に出力される。また、
速度検知部３０からの情報に基づいて移動方向検知部３
３により可動子２の移動方向を判断し、この移動方向検
知部３３により判断された移動方向に基づいて入力電流
方向判定部３４で電流の極性を決定し、入力電流方向判
定部３４で決定された電流の極性の信号が電流入力部３
２に出力される。このようにして設定された電流値で且
つ設定された極性の電流が往復運動式の電動機Ａの巻線
１１に与えられる。ここで、制御部６は速度検知部３０
と入力電流判定部３１とで構成される振幅制御部６ａ
と、速度検知部３０と移動方向検知部３３と入力電流方
向判定部３４とで構成される駆動制御部６ｂとを備えて
いる。FIG. 8 shows a block diagram of the control circuit. A is a reciprocating electric motor (that is, a linear drive unit), and 6 is a control unit. The control unit 6 is provided with a speed detection unit 30 that compares the sensor output voltage (sinusoidal waveform) of the detection unit 4 provided in the reciprocating motor A with a reference voltage and determines the speed from the difference, and An input current determination unit 31 for determining an input current from the speed determined by the speed detection unit 30 is provided, and a signal of the input current determined by the input current determination unit 31 is output to the current input unit 32. Also,
Based on the information from the speed detection unit 30, the moving direction detection unit 3
3 determines the moving direction of the mover 2, the input current direction determining unit 34 determines the polarity of the current based on the moving direction determined by the moving direction detecting unit 33, and the input current direction determining unit 34 determines. The current polarity signal is
2 is output. The current having the current value set in this way and the polarity set is applied to the winding 11 of the reciprocating motor A. Here, the control unit 6 controls the speed detection unit 30.
And an amplitude control section 6a including an input current determination section 31
And a drive control unit 6b including a speed detection unit 30, a moving direction detection unit 33, and an input current direction determination unit 34.
【００２５】図５、図６は可動子２の検知信号と電動機
Ａへの入力信号を示す。図５は検知信号の大きさによ
り、入力信号を電流入力時間巾で制御する方式である。
すなわち、可動子２の往復速度の変化は半周期毎に変化
するため、この半周期内で検知信号と、それに対応した
電動機Ａへの入力信号を供給するものである。可動子２
の速度が０の時を基準とし、ｔ0 後の速度ｖ0 を検知
し、その大きさにより電流入力時間ｔ1 〜ｔ2 の間電流
を供給している。すなわち、ｔ2 −ｔ1 の時間巾を制御
するのである。5 and 6 show a detection signal of the mover 2 and an input signal to the electric motor A. FIG. 5 shows a method of controlling the input signal by the current input time width according to the magnitude of the detection signal.
That is, since the change in the reciprocating speed of the mover 2 changes every half cycle, the detection signal and the corresponding input signal to the electric motor A are supplied within this half cycle. Mover 2
The speed with respect to the time of 0, senses the speed v 0 after t 0, and supplies a current between the current input time t 1 ~t 2 by its size. That is, to control the duration of t 2 -t 1.
【００２６】図６は可動子２の速度ｖ0 を検知し、その
大きさにより一定電流入力時間τ1〜τ2 の電流値Ａ0
を電圧の大きさを変えることにより制御するのである。
その制御関係は図７に示すように、可動刃３（つまり可
動子２）の速度ｖ0 が小さい程電流入力時間は大、若し
くは電流値Ａ0 を大にする。また、可動子２の推力を異
ならしめる手段として、特に、推力を上げる方法として
は、図１、図２に示すように永久磁石寸法の厚みＭｈ、
幅Ｍｗ、長さＭｌを大にする方式を採用したり、あるい
は、永久磁石８の磁束密度の大きなものを使用したり、
あるいは、ヨーク９の寸法Ｙｈを大きくするようにした
り、あるいは、ヨーク９の磁性力の大きな材料を使用し
たり、あるいは、固定子１と可動子２とのギャップの縮
小化が挙げられる。In FIG. 6, the velocity v 0 of the mover 2 is detected, and the current value A 0 for a constant current input time τ 1 to τ 2 is detected according to the magnitude thereof.
Is controlled by changing the magnitude of the voltage.
As for the control relationship, as shown in FIG. 7, the smaller the speed v 0 of the movable blade 3 (that is, the mover 2), the longer the current input time or the larger the current value A 0 . Further, as a means for making the thrust of the mover 2 different, in particular, as a method for increasing the thrust, as shown in FIGS.
A method of increasing the width Mw and the length Ml is adopted, or a permanent magnet 8 having a large magnetic flux density is used,
Alternatively, the size Yh of the yoke 9 may be increased, or a material having a large magnetic force for the yoke 9 may be used, or the gap between the stator 1 and the mover 2 may be reduced.
【００２７】なお、図５、図６に示すように可動子２の
速度が最大速度時（ｔ3 時）に電流を少なくとも供給す
るようにすることで、機械出力の効率が向上することに
なる。上記実施例では各刃ヘッドＨに対応する可動子２
の永久磁石８の極性を異ならせた例を示したが、各刃ヘ
ッドＨに対応する可動子２の永久磁石８の極性を同一に
した構成としてもよい。このような構成にすると可動子
２の形状の統一化がなされ、組立性、部品設計等のコス
ト低減がはかれるものである。As shown in FIGS. 5 and 6, the efficiency of the mechanical output is improved by supplying at least the current when the speed of the mover 2 is at the maximum speed (at t 3 ). . In the above embodiment, the mover 2 corresponding to each blade head H is used.
Although the example in which the polarities of the permanent magnets 8 are different is shown, the permanent magnets 8 of the mover 2 corresponding to each blade head H may have the same polarity. With such a configuration, the shape of the mover 2 is unified, and the cost for assembling, designing parts, etc. can be reduced.
【００２８】次に本発明の他の実施例を図１０乃至図１
２に基づいて説明する。この実施例においては、可動子
２を電気かみそりの厚さ方向（ｙ方向）の中央に位置す
る中央可動子２ｃと、その両側に位置する側可動子２ｄ
とを設けたものであり、中央可動子２ｃと側可動子２ｄ
の振動方向を逆方向としたこと、及び、固有振動数設定
ばね５の配置位置を中央可動子２ｃの中心垂直面上であ
るＸーＸと、駆動ブロック（電動機Ａを備えたシャーシ
ブロックと可動刃３で構成される）の高さ方向重心位置
ＹーＹ面上に位置している点に特徴がある。すなわち、
一対の側可動子２ｄの上部は連結部２６により一体化し
てあり、一対の側可動子２ｄのうち一方の側可動子２ｄ
には駆動子１７が突設してある。中央の中央可動子２ｃ
の上面部には振動方向の両側面部がばね受け部１６とな
る突部が突設してあり、該突部の上部から逆Ｌ状をした
突出片２８が設けてあり、該突出片２８の縦片にはセン
サー磁石２３が取付けてある。更に突部の上面部から駆
動子１７が突設してある。この中央の中央可動子２ｃの
突部は、一対の側可動子２ｄと連結部２６とに囲まれた
矩形状の開口部２７内に挿入され、Ｌ状をした突出片２
８のセンサー磁石２３を設けた縦片が一方の側可動子２
ｄに設けた凹所２９内に位置していて凹所２９内で移動
するようにしてある。連結部２６はばね受け部を兼用し
ており、このばね受け部を兼用している両連結部２６と
中央可動子２ｃに設けたばね受け部１６との間にそれぞ
れ固有振動数設定ばね５が介在してある。また、中央の
中央可動子２ｃの突部の上面部にはスリット刃２２を駆
動するためのスリット刃用の駆動子１７ａが設けてあ
る。そして、電気かみそり本体の厚さ方向（ｙ方向）の
中央に位置する中央可動子２ｃと、その両側に位置する
側可動子２ｄとの振動方向を逆方向とし、更に、固有振
動数設定ばね５の配置位置を中央可動子２ｃの中心垂直
面上であるＸーＸと、駆動ブロック（電動機Ａを備えた
シャーシブロックと可動刃３で構成される）の高さ方向
重心位置ＹーＹ面上に位置させることで、図１２のｘ方
向（往復方向）のバランスが取れ（つまり側可動子２ｄ
の運動方向と中央可動子２ｃの運動方向とが互いに逆の
ため往復方向の振動は打ち消される）、且つｚ軸廻り
（本体の高さ方向軸廻り）の偶力もバランスが取れ（つ
まり両側可動子２ｄのｚ軸廻りの偶力は互いに打ち消し
合い、中央の中央可動子２ｃは略ｚ軸上のため偶力は問
題ない）、また、本体前後方向（厚さ）ｙ軸廻りの偶力
が低減できるのである。Next, another embodiment of the present invention will be described with reference to FIGS.
It will be described based on 2. In this embodiment, the mover 2 is a central mover 2c located at the center of the electric shaver in the thickness direction (y direction) and side movers 2d located on both sides thereof.
And the center mover 2c and the side mover 2d.
Of the vibration frequency is set to the opposite direction, and the arrangement position of the natural frequency setting spring 5 is XX on the plane perpendicular to the center of the central mover 2c, and the drive block (movable to the chassis block including the electric motor A and movable). It is characterized in that it is located on the YY plane in the height direction center of gravity (of the blade 3). That is,
The upper parts of the pair of side movers 2d are integrated by a connecting portion 26, and one side mover 2d of the pair of side movers 2d is integrated.
A driver 17 is projectingly provided on this. Central mover 2c in the center
On the upper surface of the projection, projections whose both side surfaces in the vibration direction serve as spring receiving portions 16 are projected, and an inverted L-shaped projecting piece 28 is provided from the upper part of the projecting section. A sensor magnet 23 is attached to the vertical piece. Further, a driver element 17 is provided so as to protrude from the upper surface of the protrusion. The protrusion of the central movable element 2c at the center is inserted into a rectangular opening 27 surrounded by the pair of side movable elements 2d and the connecting portion 26, and has an L-shaped protruding piece 2
The vertical piece provided with the sensor magnet 23 of 8 is the one side mover 2
It is located in the recess 29 provided in d and is adapted to move within the recess 29. The connecting portion 26 also serves as a spring receiving portion, and the natural frequency setting spring 5 is interposed between both connecting portions 26 also serving as spring receiving portions and the spring receiving portion 16 provided on the central mover 2c. I am doing it. Further, a slit blade driver 17a for driving the slit blade 22 is provided on the upper surface of the protrusion of the central movable element 2c at the center. Then, the central movable element 2c located in the center of the electric shaver body in the thickness direction (y direction) and the side movable elements 2d located on both sides of the central movable element 2c have opposite vibration directions, and the natural frequency setting spring 5 Is located on the plane perpendicular to the center of the center mover 2c, and the height direction center of gravity position of the drive block (which is composed of the chassis block including the electric motor A and the movable blade 3) is located on the plane YY. By positioning the switch in the direction x (reciprocating direction) in FIG. 12, the side mover 2d is balanced.
And the movement of the central mover 2c are opposite to each other, so that the vibration in the reciprocating direction is canceled out) and the couple around the z-axis (around the axis in the height direction of the main body) is balanced (that is, both-side mover). The couples around the z-axis of 2d cancel each other out, and the couple is not a problem because the central central mover 2c is substantially on the z-axis. Also, the couple around the y-axis in the front-back direction of the main body (thickness) is reduced. You can do it.
【００２９】両側の側可動子２ｄを連結する連結部２６
部分は電気かみそり本体の厚さ方向で往復方向の両側に
設けてあり、上記のように、このばね受け部を兼用して
いる両連結部２６と中央可動子２ｃに設けたばね受け部
１６との間にそれぞれ固有振動数設定ばね５が１個ずつ
介在してあり、これにより固有振動数を決定してある。A connecting portion 26 for connecting the side movers 2d on both sides.
The portions are provided on both sides in the thickness direction of the electric razor body in the reciprocating direction. As described above, the connecting portions 26 also serving as the spring receiving portions and the spring receiving portion 16 provided on the central mover 2c are provided. One natural frequency setting spring 5 is interposed between them, and the natural frequency is determined by this.
【００３０】すなわち、中央可動子のＫ1 ／Ｍ1 ＝両側
可動子（一体）のＫ2 ／Ｍ2 とするものである。 Ｋ1 ＝Ｋｂ1 ＋Ｋｍ1 ＋４Ｋｃ ここで、Ｋｂ1 ；板ばねよりなる連結板１３の中央のば
ね片４０ａのばね定数 Ｋｍ1 ；中央可動子２ｃの永久磁石８の磁力の水平成分 Ｋｃ ；固有振動数設定ばね５の１本のばね定数 Ｍ1 ＝中央可動子２ｃ、駆動子１７、スリット刃用の駆
動子１７ａ、ネット刃用の可動刃３、スリット刃用の可
動刃３ａの合計質量 Ｋ2 ＝２Ｋｂ2 ＋２Ｋｍ2 ＋４Ｋｃ ここで、Ｋｂ2 ；板ばねよりなる連結板１３の側部のば
ね片４０ｂのばね定数 Ｋｍ2 ；１つの側可動子２ｄの永久磁石８の磁力の水平
成分 Ｋｃ ；固有振動数設定ばね５の１本のばね定数 Ｍ2 ＝側可動子２ｄ×２、連結部×２、駆動子１７、ネ
ット刃用の可動刃３の合計質量That is, K 1 / M 1 of the central mover = K 2 / M 2 of the both-side mover (integrated). K 1 = Kb 1 + Km 1 + 4Kc where Kb 1 ; spring constant Km 1 of the central spring piece 40 a of the connecting plate 13 made of a leaf spring; horizontal component of magnetic force of the permanent magnet 8 of the central mover 2 c Kc; natural vibration one spring constant M 1 = central mover 2c number setting spring 5, the driver elements 17, the driver elements 17a of the slit blade, the movable blade 3 of the net blade, the total mass of the movable blade 3a for slit blade K 2 = 2Kb 2 + 2Km 2 + 4Kc here, Kb 2; spring part 40b of the side of the connecting plate 13 made of a leaf spring the spring constant Km 2; 1 single horizontal component Kc of the magnetic force of the permanent magnet 8 on the side mover 2d; specific One spring constant of the frequency setting spring 5 M 2 = Side mass 2d × 2, connecting part × 2, driver 17, total mass of net blade movable blade 3
【００３１】[0031]
【発明の効果】本発明の請求項１記載の発明にあって
は、複数の刃ヘッドを備えた往復式電気かみそりにおい
て、固定子に対して可動子を往復動させるための往復運
動式の電動機を有し、往復運動式の電動機は各刃ヘッド
の可動刃に対応した複数の可動子を有し、これらの複数
の可動子を１つの固定子で駆動するように設定し、各可
動子のＫ／Ｍ（Ｋ：ばね定数、Ｍ：質量）を略等しくし
て、可動子の固有振動数を略等しくしてあるので、１つ
の固定子で複数個の可動子を往復運動させるに当たり、
各々の可動子の振動数（位相）が一致して、振動のアン
バランスが発生することがなく、往復運動式の電動機全
体が激しい振動を起こすおそれがなく、この結果、電気
かみそり全体が激しく振動することがなく、快適な髭剃
りが可能で、また、手に振動が伝わってしびれるという
ようなおそれもないものである。According to the first aspect of the present invention, in a reciprocating electric shaver having a plurality of blade heads, a reciprocating electric motor for reciprocating the mover with respect to the stator. The reciprocating electric motor has a plurality of movers corresponding to the movable blades of each blade head, and these plurality of movers are set to be driven by one stator. Since K / M (K: spring constant, M: mass) are made substantially equal and the natural frequencies of the movers are made substantially equal, when reciprocating a plurality of movers with one stator,
The vibration frequency (phase) of each mover is the same, no vibration imbalance occurs, and there is no risk of violent vibration of the entire reciprocating motor. As a result, the entire electric razor vibrates violently. It is possible to shave comfortably without having to do it, and there is no fear that vibration is transmitted to the hand and numbness occurs.
【００３２】また、請求項２記載の発明にあっては、請
求項１記載の発明の効果に加えて、往復運動式の電動機
をリニアモータにより構成し、可動子が永久磁石を備
え、固定子が電磁石により構成してあることで、つま
り、リニア駆動であり且つ固定子が１つのため、可動刃
の軌跡がほぼ水平となって切れ味が向上し、また、小型
化がはかれ、更に、駆動変換部分が少なくなり、負荷ロ
ス、騒音を減少させ、性能を向上できるものである。ま
た、磁気力の水平方向成分がばね定数を決定する要素と
なり、ばね定数の設定が確実に行えるものである。In addition to the effect of the invention described in claim 1, in the invention described in claim 2, the reciprocating electric motor is constituted by a linear motor, the mover is provided with a permanent magnet, and the stator is provided. Since it is composed of an electromagnet, that is, it is a linear drive and has one stator, the locus of the movable blade is almost horizontal and the sharpness is improved, and further miniaturization is achieved. The number of conversion parts is reduced, load loss and noise are reduced, and performance can be improved. Further, the horizontal component of the magnetic force becomes an element that determines the spring constant, and the spring constant can be set reliably.
【００３３】また、請求項３記載の発明にあっては、請
求項２記載の発明の効果に加えて、各刃ヘッドに対応す
る可動子の永久磁石の極性を異ならせることで、振動の
低減が可能となる。また、請求項４記載の発明にあって
は、請求項２記載の発明の効果に加えて、各刃ヘッドに
対応する可動子の永久磁石の極性を同一にすることで、
可動子の形状の統一化ができ、設計、組立性を容易化
し、コストを低減できるものである。According to the invention of claim 3, in addition to the effect of the invention of claim 2, vibration is reduced by changing the polarities of the permanent magnets of the mover corresponding to each blade head. Is possible. In addition, in the invention of claim 4, in addition to the effect of the invention of claim 2, by making the polarities of the permanent magnets of the movers corresponding to the blade heads the same,
It is possible to unify the shape of the mover, facilitate the design and assembling, and reduce the cost.
【００３４】また、請求項５記載の発明にあっては、請
求項２記載の発明の効果に加えて、各刃ヘッドに対応す
る可動子の推力を異ならせることで、多ヘッドの機能に
応じて負荷の異なるケースがあるが、その場合の最適駆
動パワーを各駆動子に供給できて、負荷の大きさに応じ
た駆動パワーを得ることができ、効率化がはかれるもの
である。According to the invention described in claim 5, in addition to the effect of the invention described in claim 2, the thrust of the mover corresponding to each blade head is made different so as to meet the function of multiple heads. There is a case where the load is different, but the optimum drive power in that case can be supplied to each driver, and the drive power according to the size of the load can be obtained, and the efficiency is improved.
【００３５】また、請求項６記載の発明にあっては、請
求項５記載の発明の効果に加えて、永久磁石の幅又は厚
みを異ならせることで、簡単な構成で可動子の推力を異
ならせることができるものである。また、請求項７記載
の発明にあっては、請求項５記載の発明の効果に加え
て、永久磁石の磁束密度を異ならせることで、簡単な構
成で可動子の推力を異ならせることができるものであ
る。According to the invention of claim 6, in addition to the effect of the invention of claim 5, by varying the width or thickness of the permanent magnet, the thrust of the mover can be varied with a simple structure. It can be done. According to the invention of claim 7, in addition to the effect of the invention of claim 5, the magnetic flux density of the permanent magnets is made different, so that the thrust of the mover can be made different with a simple configuration. It is a thing.
【００３６】また、請求項８記載の発明にあっては、請
求項５記載の発明の効果に加えて、可動子のヨークの寸
法を異ならせることで、簡単な構成で可動子の推力を異
ならせることができるものである。また、請求項９記載
の発明にあっては、請求項５記載の発明の効果に加え
て、可動子のヨークの材質を異ならせることで、簡単な
構成で可動子の推力を異ならせることができるものであ
る。According to the invention of claim 8, in addition to the effect of the invention of claim 5, by changing the size of the yoke of the mover, if the thrust of the mover is different with a simple structure. It can be done. According to the invention of claim 9, in addition to the effect of the invention of claim 5, by changing the material of the yoke of the mover, the thrust of the mover can be changed with a simple structure. It is possible.
【００３７】また、請求項１０記載の発明にあっては、
請求項５記載の発明の効果に加えて、可動子のヨークの
材質を異ならせることで、簡単な構成で可動子の推力を
異ならせることができるものである。また、請求項１１
記載の発明にあっては、請求項１記載の発明の効果に加
えて、中央刃ヘッドと、該中央刃ヘッドの両側に配置し
た側刃ヘッドを備え、中央刃ヘッドに対応する中央可動
子の運動方向と各側刃ヘッドに対応する側可動子の運動
方向とを異ならせると共に、中央可動子の質量と両側可
動子の総質量とを等しくしてあるので、往復方向の振動
及び本体高さ軸廻りの偶力の低減ができ、飛躍的に異常
振動を少なくすることができるものである。According to the invention of claim 10,
In addition to the effect of the invention as set forth in claim 5, by changing the material of the yoke of the mover, it is possible to change the thrust of the mover with a simple structure. In addition, claim 11
In the described invention, in addition to the effect of the invention described in claim 1, a central blade head and side blade heads arranged on both sides of the central blade head are provided, and a central mover corresponding to the central blade head is provided. Since the moving direction and the moving direction of the side mover corresponding to each side blade head are made different, and the mass of the central mover and the total mass of both side movers are made equal, vibration in the reciprocating direction and height of the main body It is possible to reduce the couple around the shaft and dramatically reduce abnormal vibration.
【００３８】また、請求項１２記載の発明にあっては、
請求項１１記載の発明の効果に加えて、中央可動子はか
みそり本体の中心軸を通って往復動するものであり、中
央可動子と両側可動子の間にばねを配設し、該ばねをか
みそり本体の中心軸を含む鉛直面内に配置してあるの
で、駆動力の伝達がばねによってなされるが、厚さ方向
中心平面上にあるので、偶力が発生せず、異常振動が小
さくなり、また、一方の可動刃の負荷が大きく振幅が急
激に減少しようとした時に、ばねによりもう一方の可動
刃の可動子を介してこの減少を抑えようとする力が働
き、片方のみの振幅減少を防ぎ、常にバランスの取れた
均一な振幅量にできて、切れ味を向上させることができ
るものである。Further, in the invention of claim 12,
In addition to the effect of the invention as set forth in claim 11, the central mover reciprocates through the central axis of the razor body, and a spring is arranged between the central mover and the two side movers, and the spring is Since it is placed in the vertical plane including the central axis of the razor body, the driving force is transmitted by the spring, but since it is on the center plane in the thickness direction, no couple force is generated and abnormal vibration is reduced. In addition, when the load on one movable blade is large and the amplitude is about to decrease sharply, the spring acts a force to suppress this decrease via the mover of the other movable blade, and the amplitude of only one decreases. It is possible to improve the sharpness by preventing the occurrence of noise and by always making the amount of amplitude uniform and balanced.
【００３９】また、請求項１３記載の発明にあっては、
請求項１２記載の発明の効果に加えて、往復運動式の電
動機の重心を含む水平面と、かみそり本体の中心軸を含
む鉛直面との交線上にばねを配置してあるので、駆動ブ
ロック（電動機を備えたシャーシブロックと可動刃で構
成される）の高さ方向重心位置にばねを設置することに
なり、本体前後方向（厚さ方向）の軸廻りの偶力が低減
できるものである。Further, in the invention according to claim 13,
In addition to the effect of the invention as set forth in claim 12, since the spring is arranged on the line of intersection between the horizontal plane including the center of gravity of the reciprocating motor and the vertical plane including the central axis of the razor body, the drive block (motor is The spring is installed at the center of gravity in the height direction of the chassis block and the movable blade), and the couple around the shaft in the front-back direction (thickness direction) of the main body can be reduced.
【００４０】また、請求項１４記載の発明にあっては、
請求項１１記載の発明の効果に加えて、両側可動子を往
復方向と直交方向で連結し、この連結部と中央可動子と
の間にばねを配置してあるので、つまり、連結部で連結
することで両側可動子を一体化して部品点数を削減し、
また、ばねの設置位置が連結部と中央可動子との間にあ
ることで、駆動部のコンパクト化がはかれるものであ
る。According to the fourteenth aspect of the invention,
In addition to the effect of the invention as set forth in claim 11, since both side movers are connected in a direction orthogonal to the reciprocating direction and a spring is arranged between the connecting part and the central mover, that is, the connecting part is connected. By integrating the movers on both sides, the number of parts can be reduced.
In addition, since the spring is installed between the connecting portion and the central mover, the drive portion can be made compact.
【００４１】また、請求項１５記載の発明にあっては、
請求項１記載の発明の効果に加えて、可動子を、往復動
方向にのみ変位可能な板状のばね材によって固定部に支
持して、可動子と固定子との間のギャップを保持し、該
ばね材にて可動子のばね定数Ｋを設定してあるので、各
可動子のＫ／Ｍ（Ｋ：ばね定数、Ｍ：質量）を略等しく
して、可動子の固有振動数を略等しくするに当たり、簡
単な構成で達成できるものである。According to the invention of claim 15,
In addition to the effect of the invention as set forth in claim 1, the movable element is supported by the fixed portion by a plate-shaped spring material that can be displaced only in the reciprocating direction, and the gap between the movable element and the stator is maintained. Since the spring constant K of the mover is set by the spring material, K / M (K: spring constant, M: mass) of each mover is set to be substantially equal, and the natural frequency of the mover is set to be substantially the same. To make them equal, it is possible to achieve with a simple configuration.
【００４２】また、請求項１６記載の発明にあっては、
請求項１記載の発明の効果に加えて、各可動子の間に往
復動方向にのみ変位可能なばねを設けて各可動子を連結
し、該ばねにて可動子のばね定数Ｋを設定しているの
で、各可動子のＫ／Ｍ（Ｋ：ばね定数、Ｍ：質量）を略
等しくして、可動子の固有振動数を略等しくするに当た
り、簡単な構成で達成できるものである。Further, in the invention according to claim 16,
In addition to the effect of the invention as set forth in claim 1, a spring that can be displaced only in the reciprocating direction is provided between each of the movers to connect the movers, and the spring constant K of the mover is set by the spring. Therefore, K / M (K: spring constant, M: mass) of each mover can be made substantially equal, and the natural frequency of the mover can be made substantially equal, which can be achieved with a simple configuration.
【図１】本発明の往復式電気かみそりの要部の正面断面
図である。FIG. 1 is a front sectional view of an essential part of a reciprocating electric shaver according to the present invention.
【図２】同上の要部の側面断面図である。FIG. 2 is a side sectional view of an essential part of the above.
【図３】同上の往復運動式の電動機及び可動刃の組立状
態の斜視図である。FIG. 3 is a perspective view of the reciprocating electric motor and the movable blade of the above assembling state.
【図４】同上の往復運動式の電動機の分解斜視図であ
る。FIG. 4 is an exploded perspective view of the above reciprocating electric motor.
【図５】可動子の検知信号と電動機への入力信号を示す
グラフである。FIG. 5 is a graph showing a detection signal of a mover and an input signal to an electric motor.
【図６】可動子の検知信号と電動機への入力信号の他例
を示すグラフである。FIG. 6 is a graph showing another example of a mover detection signal and an input signal to an electric motor.
【図７】可動刃の速度と電流入力時間又は電流値の関係
を示すグラフである。FIG. 7 is a graph showing the relationship between the speed of the movable blade and the current input time or current value.
【図８】本発明の制御回路のブロック図である。FIG. 8 is a block diagram of a control circuit of the present invention.
【図９】振幅と速度信号と電流のタイミングを示すグラ
フである。FIG. 9 is a graph showing timing of amplitude, speed signal, and current.
【図１０】本発明の往復式電気かみそりの他の実施例の
要部の正面断面図である。FIG. 10 is a front sectional view of a main part of another embodiment of the reciprocating electric shaver of the present invention.
【図１１】同上の要部の側面断面図である。FIG. 11 is a side sectional view of an essential part of the above.
【図１２】同上の往復運動式の電動機の分解斜視図であ
る。FIG. 12 is an exploded perspective view of the above reciprocating electric motor.
Ａ 電動機 Ｈ ヘッド １ 固定子 ２ 可動子 ３ 可動刃 ５ ばね ８ 永久磁石 ９ ヨーク １２ ギャップ ４０ ばね材 A motor H head 1 stator 2 mover 3 movable blade 5 spring 8 permanent magnet 9 yoke 12 gap 40 spring material
Claims (16)
そりにおいて、固定子に対して可動子を往復動させるた
めの往復運動式の電動機を有し、往復運動式の電動機は
各刃ヘッドの可動刃に対応した複数の可動子を有し、こ
れらの複数の可動子を１つの固定子で駆動するように設
定し、各可動子のＫ／Ｍ（Ｋ：ばね定数、Ｍ：質量）を
略等しくして、可動子の固有振動数を略等しくして成る
ことを特徴とする往復式電気かみそり。1. A reciprocating electric shaver provided with a plurality of blade heads, comprising a reciprocating electric motor for reciprocating a mover with respect to a stator, and the reciprocating electric motor is provided for each blade head. It has a plurality of movers corresponding to the movable blades, and these plurality of movers are set to be driven by one stator, and K / M (K: spring constant, M: mass) of each mover is set. A reciprocating electric razor characterized in that the moving elements have substantially the same natural frequency.
り構成し、可動子が永久磁石を備え、固定子が電磁石に
より構成してあることを特徴とする請求項１記載の往復
式電気かみそり。2. A reciprocating electric shaver according to claim 1, wherein the reciprocating electric motor comprises a linear motor, the mover comprises a permanent magnet, and the stator comprises an electromagnet.
の極性を異ならせて成ることを特徴とする請求項２記載
の往復式電気かみそり。3. The reciprocating electric shaver according to claim 2, wherein the permanent magnets of the mover corresponding to each blade head have different polarities.
の極性を同一にして成ることを特徴とする請求項２記載
の往復式電気かみそり。4. The reciprocating electric shaver according to claim 2, wherein the permanent magnets of the mover corresponding to each blade head have the same polarity.
ならせて成ることを特徴とする請求項２記載の往復式電
気かみそり。5. The reciprocating electric shaver according to claim 2, wherein thrust of a mover corresponding to each blade head is different.
ことを特徴とする請求項５記載の往復式電気かみそり。6. The reciprocating electric shaver according to claim 5, wherein the permanent magnets have different widths or thicknesses.
とを特徴とする請求項５記載の往復式電気かみそり。7. The reciprocating electric shaver according to claim 5, wherein the permanent magnets have different magnetic flux densities.
ことを特徴とする請求項５記載の往復式電気かみそり。8. The reciprocating electric shaver according to claim 5, wherein the yoke of the mover is made different in size.
ことを特徴とする請求項５記載の往復式電気かみそり。9. The reciprocating electric shaver according to claim 5, wherein the yoke of the mover is made of a different material.
さを異ならせて成ることを特徴とする請求項５記載の往
復式電気かみそり。10. The reciprocating electric shaver according to claim 5, wherein the permanent magnet and the electromagnet have different gap lengths.
側に配置した側刃ヘッドを備え、中央刃ヘッドに対応す
る中央可動子の運動方向と各側刃ヘッドに対応する側可
動子の運動方向とを異ならせると共に、中央可動子の質
量と両側可動子の総質量とを等しくして成ることを特徴
とする請求項１記載の往復式電気かみそり。11. A central blade head and side blade heads arranged on both sides of the central blade head, wherein the moving direction of the central mover corresponding to the central blade head and the movement of the side mover corresponding to each side blade head. 2. The reciprocating electric shaver according to claim 1, wherein the mass of the central mover and the total mass of the movers on both sides are made equal while making the directions different.
通って往復動するものであり、中央可動子と両側可動子
の間にばねを配設し、該ばねをかみそり本体の中心軸を
含む鉛直面内に配置して成ることを特徴とする請求項１
１記載の往復式電気かみそり。12. The central mover reciprocates through the central axis of the razor body, and a spring is arranged between the central mover and both side movers, and the spring includes the central axis of the razor body. 2. The structure is arranged in a vertical plane.
The reciprocating electric razor described in 1.
面と、かみそり本体の中心軸を含む鉛直面との交線上に
ばねを配置して成ることを特徴とする請求項１２記載の
往復式電気かみそり。13. A reciprocating electric machine according to claim 12, wherein a spring is arranged on a line of intersection between a horizontal plane including a center of gravity of the reciprocating motor and a vertical plane including a central axis of the razor body. Razor.
結し、この連結部と中央可動子との間にばねを配置して
成ることを特徴とする請求項１１記載の往復式電気かみ
そり。14. The reciprocating electric shaver according to claim 11, wherein the movable elements on both sides are connected in a direction orthogonal to the reciprocating direction, and a spring is arranged between the connecting portion and the central movable element.
な板状のばね材によって固定部に支持して、可動子と固
定子との間のギャップを保持し、該ばね材にて可動子の
ばね定数Ｋを設定して成ることを特徴とする請求項１記
載の往復式電気かみそり。15. A movable member is supported by a fixed portion by a plate-shaped spring member that can be displaced only in the reciprocating direction, a gap between the movable member and the stator is held, and the movable member is moved by the spring member. The reciprocating electric shaver according to claim 1, wherein a spring constant K of the child is set.
可能なばね材を設けて各可動子を連結し、該ばね材にて
可動子のばね定数Ｋを設定して成ることを特徴とする請
求項１記載の往復式電気かみそり。16. A spring member, which can be displaced only in the reciprocating direction, is provided between each of the movers to connect the movers, and the spring constant K of the mover is set by the spring members. The reciprocating electric razor according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05756894A JP3427468B2 (en) | 1994-03-28 | 1994-03-28 | Reciprocating electric razor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05756894A JP3427468B2 (en) | 1994-03-28 | 1994-03-28 | Reciprocating electric razor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07265560A true JPH07265560A (en) | 1995-10-17 |
| JP3427468B2 JP3427468B2 (en) | 2003-07-14 |
Family
ID=13059449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05756894A Expired - Fee Related JP3427468B2 (en) | 1994-03-28 | 1994-03-28 | Reciprocating electric razor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3427468B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997035691A1 (en) * | 1996-03-26 | 1997-10-02 | Matsushita Electric Works, Ltd. | Reciprocating-type electric shaver |
| US7748123B2 (en) | 2006-08-31 | 2010-07-06 | Rovcal, Inc. | Electric hair cutting appliance with counter weight |
| WO2012005082A1 (en) * | 2010-07-08 | 2012-01-12 | パナソニック電工株式会社 | Reciprocating electric razor |
| JP2013158136A (en) * | 2012-01-30 | 2013-08-15 | Mitsumi Electric Co Ltd | Actuator and electrically driven hairdressing equipment |
| CN103392289A (en) * | 2011-02-23 | 2013-11-13 | 移动磁体技术公司 | Electromagnetic actuator having improved force density, and use thereof for an electric razor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6627318B2 (en) | 2015-08-04 | 2020-01-08 | ミツミ電機株式会社 | Actuator and electric beauty appliance |
| JP6613694B2 (en) | 2015-08-04 | 2019-12-04 | ミツミ電機株式会社 | Actuator and electric hairdressing beauty instrument |
| JP6659951B2 (en) | 2016-03-31 | 2020-03-04 | ミツミ電機株式会社 | Actuator and electric beauty appliance |
-
1994
- 1994-03-28 JP JP05756894A patent/JP3427468B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997035691A1 (en) * | 1996-03-26 | 1997-10-02 | Matsushita Electric Works, Ltd. | Reciprocating-type electric shaver |
| US6098288A (en) * | 1996-03-26 | 2000-08-08 | Matsushita Electric Works, Ltd. | Reciprocating-type electric shaver |
| US7748123B2 (en) | 2006-08-31 | 2010-07-06 | Rovcal, Inc. | Electric hair cutting appliance with counter weight |
| US8079149B2 (en) | 2006-08-31 | 2011-12-20 | Rovcal, Inc. | Electric hair cutting appliance with counter weight |
| WO2012005082A1 (en) * | 2010-07-08 | 2012-01-12 | パナソニック電工株式会社 | Reciprocating electric razor |
| CN103392289A (en) * | 2011-02-23 | 2013-11-13 | 移动磁体技术公司 | Electromagnetic actuator having improved force density, and use thereof for an electric razor |
| JP2013158136A (en) * | 2012-01-30 | 2013-08-15 | Mitsumi Electric Co Ltd | Actuator and electrically driven hairdressing equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3427468B2 (en) | 2003-07-14 |
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