JPH0898493A - Electromagnetic driver - Google Patents
Electromagnetic driverInfo
- Publication number
- JPH0898493A JPH0898493A JP32019794A JP32019794A JPH0898493A JP H0898493 A JPH0898493 A JP H0898493A JP 32019794 A JP32019794 A JP 32019794A JP 32019794 A JP32019794 A JP 32019794A JP H0898493 A JPH0898493 A JP H0898493A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic pole
- stator
- permanent magnet
- magnetic
- leg piece
- 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
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、往復式電気かみそりあ
るいは電磁エアポンプ等に利用可能な可動子ブロックが
略直線往復運動する電磁駆動装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic drive device in which a mover block that can be used in a reciprocating electric shaver or an electromagnetic air pump moves in a substantially linear reciprocating manner.
【０００２】[0002]
【従来の技術】この種の電磁駆動装置として、図５に示
すように、フランス特許出願番号９１／１２５８７に開
示される固定子ブロックと可動子ブロックを備えたもの
が存在する。このものの固定子ブロック1 は、中央脚片
2aとその両側に側部脚片2b,2bを有し磁極面2A,2B,2Bと
なる各脚片2a,2b,2bの端面が同一平面内に位置するよう
大略Ｅ字状に形成された固定子2 と、固定子2 の中央脚
片2aの磁極面2Aと側部脚片2b,2b の磁極面2B,2B が逆極
性になるよう励磁するべく固定子2 の中央脚片2aに巻装
された励磁コイル (図示せず) と、を有してなる。2. Description of the Related Art As an electromagnetic drive device of this type, there is a device provided with a stator block and a mover block, which is disclosed in French Patent Application No. 91/12587, as shown in FIG. The stator block 1 of this one is
2a and side leg pieces 2b, 2b on both sides thereof are formed in a substantially E shape so that the end faces of the leg pieces 2a, 2b, 2b which are the magnetic pole surfaces 2A, 2B, 2B are located in the same plane. The stator 2 and the pole piece 2a of the center leg piece 2a of the stator 2 and the pole piece faces 2B and 2B of the side leg pieces 2b and 2b are wound around the center leg piece 2a of the stator 2 so as to be excited so as to have opposite polarities. And a mounted excitation coil (not shown).
【０００３】可動子ブロック4 は、固定子2 の各磁極面
2A,2B,2Bに対向し各脚片2a,2b,2bが並設される方向に異
なる２個の極性が存在するよう着磁された永久磁石5
と、永久磁石5 の磁極面5A,5B と固定子ブロック1 の磁
極面2A,2B,2Bと間に略一定の磁気空隙G が形成され、か
つ永久磁石5 を２個の極性が存在する方向に移動可能な
状態に支持するばね部材6,6 と、を有してなる。さらに
詳しくは、永久磁石5 は、薄板状であり、固定子2 の各
磁極面2A,2B,2Bに対向し各脚片2a,2b,2bが並設される方
向に２個の磁石部5a,5b を有し、これらが磁気空隙G に
対し直交方向に着磁され、そして大略台形状をなす非磁
性材料製の支持台7 に取着される。The mover block 4 is a magnetic pole surface of the stator 2.
Permanent magnets 5 magnetized so that there are two different polarities in the direction in which the leg pieces 2a, 2b, 2b are arranged side by side facing 2A, 2B, 2B.
And the magnetic pole surfaces 5A, 5B of the permanent magnet 5 and the magnetic pole surfaces 2A, 2B, 2B of the stator block 1 have a substantially constant magnetic gap G, and the permanent magnet 5 has two polarities. And spring members 6 and 6 that support the movable member in a movable state. More specifically, the permanent magnet 5 is in the shape of a thin plate and has two magnet portions 5a facing the magnetic pole surfaces 2A, 2B, 2B of the stator 2 in the direction in which the leg pieces 2a, 2b, 2b are arranged in parallel. , 5b, which are magnetized in the direction orthogonal to the magnetic gap G, and are attached to a support base 7 made of a non-magnetic material and having a substantially trapezoidal shape.
【０００４】8 は磁路形成部で、磁性材料により大略台
形状に形成され、永久磁石5 の磁極面5A,5B の反対側の
端面に、２個の極性に十分に跨がって当接するよう永久
磁石5 及び／又は支持台7 に取着される。また、ばね部
材6,6 は、長板状の板ばねであり、基端は固定子2 の外
方側面に固定されたばね固定部材10に固定され、先端に
支持台7 の両端部を支持している。Reference numeral 8 denotes a magnetic path forming portion which is formed of a magnetic material in a substantially trapezoidal shape and abuts on the end surface of the permanent magnet 5 on the side opposite to the magnetic pole surfaces 5A and 5B while straddling the two polarities sufficiently. Attached to the permanent magnet 5 and / or the support 7. The spring members 6 and 6 are long plate-shaped leaf springs, the base end of which is fixed to a spring fixing member 10 which is fixed to the outer side surface of the stator 2, and the ends of which support both ends of the support base 7. ing.
【０００５】この電磁駆動装置は、励磁コイル (図示せ
ず) を励磁しないとき、ばね部材6,6 は略フリー状態と
なり、永久磁石5 の中心、すなわち両磁石部5a,5b の境
界部分が中央脚片2aの磁極面2Aの中心に一致している。
そして、励磁コイル (図示せず) をパルス状の交番直流
電圧でもって励磁すると、先ず、磁極面2Aと磁極面2B,2
B に所定の異極性が現れ、可動子ブロック4 の各磁極面
5A,5B との間に吸引、反発力が作用し、ばね部材6,6 を
撓ませながら可動子ブロック4 が所定方向に移動し、最
大変位に至る前に直流電圧を零とする。直流電圧が零と
なっても、可動子ブロック4 は慣性力により最大変位位
置まで移動し、その位置に至ったとき、逆方向の直流電
圧でもって励磁する。これにより、磁極面2Aと磁極面2
B,2B に反対の異極性が現れ、ばね部材6,6 のばね力と
磁気的な吸引、反発力が作用して可動子ブロック4 が復
帰方向に移動する。この動作は、パルス状の交番直流電
圧でもって励磁している間、繰り返す。In this electromagnetic drive device, when the exciting coil (not shown) is not excited, the spring members 6 and 6 are in a substantially free state, and the center of the permanent magnet 5, that is, the boundary portion between both magnet portions 5a and 5b is in the center. It coincides with the center of the magnetic pole surface 2A of the leg piece 2a.
Then, when an exciting coil (not shown) is excited by a pulsed alternating DC voltage, first, the magnetic pole surface 2A and the magnetic pole surfaces 2B, 2
Predetermined different polarity appears in B, and each pole face of mover block 4
Suction and repulsive force act between 5A and 5B to move the mover block 4 in a predetermined direction while bending the spring members 6 and 6 and make the DC voltage zero before reaching the maximum displacement. Even if the DC voltage becomes zero, the mover block 4 moves to the maximum displacement position due to the inertial force, and when it reaches that position, it is excited by the DC voltage in the opposite direction. As a result, the magnetic pole surface 2A and the magnetic pole surface 2
Opposite opposite polarities appear in B and 2B, and the spring force of the spring members 6 and the magnetic attraction and repulsion force act to move the mover block 4 in the returning direction. This operation is repeated while being excited by a pulsed alternating DC voltage.
【０００６】従って、このような電磁駆動装置は、可動
子ブロック4 に、電気かみそりの内刃や電磁エアポンプ
のダイヤフラム等を連結することにより電気かみそりや
電磁エアポンプに用いることができる。Therefore, such an electromagnetic drive device can be used for an electric shaver or an electromagnetic air pump by connecting the inner blade of the electric shaver or the diaphragm of the electromagnetic air pump to the mover block 4.
【０００７】また、可動子ブロック4 の変形例として、
図６に示す構造のものがフランス特許出願番号９２／０
５４６５に開示されている。このものの支持台7 は、大
略台形状の支持基部7aと、その端部から大略Ｌ字状に連
設された固定連設部7b,7b からなっている。ばね部材6,
6 は、長板状の板ばねであることは先の例と同様である
が、その基端は例えば電気かみそりのケースといった固
定部材11、あるいは先の例に示したものを変形させたば
ね固定部材10に固定されている。As a modification of the mover block 4,
The structure shown in FIG. 6 has a French patent application number 92/0.
5465. The support base 7 of this one is composed of a support base 7a having a substantially trapezoidal shape, and fixed connecting portions 7b, 7b which are connected from the end thereof in a substantially L-shape. Spring member 6,
6 is the same as the previous example in that it is a long plate-shaped leaf spring, but its base end is a fixing member 11 such as an electric razor case, or a spring fixing member obtained by modifying the one shown in the previous example. It is fixed at 10.
【０００８】このものは、先の例と比較して、ばね部材
6,6 を長くするのに適しており、ケースのような固定部
材11に固定するとばね固定部材10が省略できる。This is a spring member as compared with the previous example.
The spring fixing member 10 can be omitted by fixing it to a fixing member 11 such as a case.
【０００９】[0009]
【発明が解決しようとする課題】一般的な往復刃を有す
る往復式電気かみそりは、モータの出力回転を偏心カム
を用いて直線往復運動に変換している。そのような構造
にあっては、モータや運動変換機構が存在することによ
り、高速化に限界がありその構造も複雑でコストダウン
にも限界がある。A general reciprocating electric shaver having a reciprocating blade converts the output rotation of a motor into a linear reciprocating motion using an eccentric cam. In such a structure, due to the existence of the motor and the motion conversion mechanism, there is a limit to the speedup, the structure is complicated, and the cost reduction is also limited.
【００１０】前述した電磁駆動装置を往復刃を有する往
復式電気かみそりに用いた場合、その往復刃である内刃
を可動子ブロックに連結すればよいので、モータや運動
変換機構が不要となる。その結果、一般的なものに比し
てより高速化が図れ、しかも構造も簡単になってコスト
ダウンが図れる。When the electromagnetic drive device described above is used in a reciprocating electric shaver having a reciprocating blade, the inner blade, which is the reciprocating blade, may be connected to the mover block, so that no motor or motion converting mechanism is required. As a result, the speed can be further increased as compared with the general one, and the structure can be simplified to reduce the cost.
【００１１】なお、特開昭５５−８４１９０には、モー
タを用いない往復刃を有する往復式電気かみそりが開示
されている。このものは、永久磁石が励磁コイルの中空
部内に移動可能な状態に配設され、全体としてはその永
久磁石は回動軸を中心にした揺動運動を行っている。Incidentally, Japanese Patent Laid-Open No. 55-84190 discloses a reciprocating electric shaver having a reciprocating blade that does not use a motor. In this device, a permanent magnet is movably arranged in the hollow portion of the exciting coil, and as a whole, the permanent magnet makes an oscillating motion about a rotation axis.
【００１２】ところで、往復式電気かみそりあるいは電
磁エアポンプ等に電磁駆動装置を用いた場合、可動子ブ
ロックの復帰静止位置 (移動範囲の中心位置) からの変
位量が大きくなっても推力が低下しない、むしろ増大す
ることが望まれる。By the way, when an electromagnetic drive device is used for a reciprocating electric razor, an electromagnetic air pump, etc., the thrust does not decrease even if the displacement amount from the return stationary position (center position of the moving range) of the mover block increases. Rather, it is desired to increase.
【００１３】本発明は、かかる事由に鑑みてなしたもの
で、その目的とするところは、略直線往復運動する可動
子ブロックの復帰静止位置 (移動範囲の中心位置) から
の変位量が大きくなっても十分な推力が確保できる電磁
駆動装置を提供することにある。The present invention has been made in view of the above circumstances. The object of the present invention is to increase the amount of displacement of the mover block, which is substantially linearly reciprocated, from the returning stationary position (center position of the moving range). Even so, it is to provide an electromagnetic drive device that can secure a sufficient thrust.
【００１４】[0014]
【課題を解決するための手段】かかる課題を解決するた
めに、請求項１記載の電磁駆動装置は、中央脚片とその
両側に側部脚片を有し磁極面となる各脚片の端面が略同
一平面内に位置するよう形成された固定子と、固定子の
中央脚片の磁極面と側部脚片の磁極面が逆極性になるよ
う励磁するべく固定子に巻装された励磁コイルと、を有
する固定子ブロックと、固定子の各磁極面に対向し各脚
片が並設される方向に異なる２個の極性が存在するよう
大略中央脚片の軸線方向に着磁された永久磁石と、永久
磁石の磁極面と固定子ブロックの磁極面と間に略一定の
磁気空隙が形成されかつ永久磁石を２個の極性が存在す
る方向に移動可能な状態に支持するばね部材と、を有す
る可動子ブロックと、を有する電磁振動装置において、
前記側部脚片と永久磁石の磁極面によって形成される磁
気空隙における磁束を、中央脚片の軸線に平行な基準線
に対し、固定子側が外方に所定角度拡がるよう構成して
いる。In order to solve the above-mentioned problems, an electromagnetic drive device according to a first aspect of the present invention is to provide an end face of each leg piece having a central leg piece and side leg pieces on both sides thereof and serving as a magnetic pole surface. Is formed so as to lie substantially in the same plane, and the magnetic pole surface of the central leg piece of the stator and the magnetic pole surface of the side leg pieces of the stator are excited so as to have opposite polarities. A stator block having a coil, and magnetized approximately in the axial direction of the center leg piece so that two different polarities exist in the direction in which the leg pieces are arranged in parallel facing each pole face of the stator. A permanent magnet, and a spring member that forms a substantially constant magnetic gap between the magnetic pole surface of the permanent magnet and the magnetic pole surface of the stator block, and supports the permanent magnet in a movable state in the two polar directions. And an electromagnetic vibration device having a mover block having
The magnetic flux in the magnetic gap formed by the side leg pieces and the magnetic pole surfaces of the permanent magnets is configured so that the stator side spreads outward by a predetermined angle with respect to a reference line parallel to the axis of the central leg piece.
【００１５】また、請求項２記載の電磁駆動装置は、請
求項１記載の側部脚片と永久磁石の磁極面を、それらに
よって形成される磁気空隙が中央に向かうに従い順次大
きくなるよう互いに非平行に形成した構成としている。According to another aspect of the electromagnetic drive device of the present invention, the side leg pieces and the magnetic pole surfaces of the permanent magnets according to the first aspect are arranged such that the magnetic air gaps formed between them are gradually increased toward the center. The structure is formed in parallel.
【００１６】また、請求項３記載の電磁駆動装置は、請
求項２記載の固定子ブロックの側部脚片の磁極面を、内
方に向かうに従い永久磁石より遠ざかるよう形成した構
成としている。According to a third aspect of the electromagnetic drive device of the present invention, the magnetic pole surfaces of the side leg pieces of the stator block according to the second aspect are formed so as to be farther from the permanent magnets toward the inside.
【００１７】また、請求項４記載の電磁駆動装置は、請
求項１記載の永久磁石を、その磁化方向が中央脚片の軸
線に平行な基準線に対し、所定角度傾くよう磁化されて
いる構成としている。According to another aspect of the electromagnetic drive device of the present invention, the permanent magnet according to the first aspect is magnetized so that its magnetizing direction is inclined at a predetermined angle with respect to a reference line parallel to the axis of the central leg piece. I am trying.
【００１８】さらに、請求項５記載の電磁駆動装置は、
請求項４記載の所定角度を３０°乃至４５°とした構成
としている。Further, the electromagnetic drive device according to claim 5 is
The predetermined angle according to claim 4 is set to 30 ° to 45 °.
【００１９】[0019]
【作用】請求項１記載の構成によれば、側部脚片と永久
磁石の両磁極面によって形成される磁気空隙における磁
束は、中央脚片の軸線に平行な基準線に対し、固定子側
が外方に所定角度拡がるように流れるので、可動子ブロ
ックの運動に対する磁束の有効成分が増大し、略直線往
復運動する可動子ブロックの復帰静止位置 (移動範囲の
中心位置) からの変位量が大きくなっても十分な推力が
確保できる。According to the structure of claim 1, the magnetic flux in the magnetic gap formed by the side leg pieces and the magnetic pole surfaces of the permanent magnet is on the stator side with respect to the reference line parallel to the axis of the central leg piece. Since it flows outwardly by a predetermined angle, the effective component of the magnetic flux with respect to the movement of the mover block increases, and the amount of displacement from the return stationary position (center position of the moving range) of the mover block that makes a substantially linear reciprocating motion increases Even then, sufficient thrust can be secured.
【００２０】請求項２記載の構成によれば、請求項１記
載の作用を得るのに、側部脚片と永久磁石の磁極面とな
る端面を構造的に設定するだけで可能となる。According to the structure described in claim 2, the operation described in claim 1 can be obtained only by structurally setting the side leg pieces and the end faces which are the magnetic pole faces of the permanent magnets.
【００２１】請求項３記載の構成によれば、請求項２記
載の作用に加え、可動子ブロックの形状、構造が簡単な
ものとなる。According to the structure of claim 3, in addition to the operation of claim 2, the shape and structure of the mover block can be simplified.
【００２２】請求項４記載の構成によれば、請求項１記
載の作用を得るのに、側部脚片と永久磁石の磁極面とな
る端面をそれぞれ略同一平面内に位置させるという通常
の構造にて可能となる。According to the structure described in claim 4, in order to obtain the action described in claim 1, the normal structure is such that the side leg pieces and the end faces that are the magnetic pole faces of the permanent magnets are located in substantially the same plane. It becomes possible in.
【００２３】請求項５記載の構成によれば、請求項４記
載の作用に加え、より大きい推力が確保できるものとな
る。According to the structure of claim 5, in addition to the function of claim 4, a larger thrust can be secured.
【００２４】[0024]
【実施例】以下、本発明の第１実施例を図１及び図２に
基づいて説明する。なお、従来の技術の項で説明したも
のと基本的機能が同様の部材及び部位には、同一の符号
を付している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. It should be noted that members and parts having the same basic functions as those described in the section of the related art are given the same reference numerals.
【００２５】固定子ブロック1 は、固定子2 と励磁コイ
ル3 により構成される。固定子2 は、中央脚片2aとその
両側に側部脚片2b,2b を有し磁極面2A,2B,2Bとなる各脚
片2a,2b,2bの端面が略同一平面内に位置するよう連結片
とともに大略Ｅ字状に形成される。ただし、磁極面2A,2
B,2Bとなる各脚片2a,2b,2bの端面は、厳密には同一平面
内にはなく、特に、側部脚片2b,2b の磁極面2B,2B はや
や傾斜している。The stator block 1 is composed of a stator 2 and an exciting coil 3. The stator 2 has a central leg piece 2a and side leg pieces 2b, 2b on both sides thereof, and the end faces of the leg pieces 2a, 2b, 2b which are magnetic pole surfaces 2A, 2B, 2B are located in substantially the same plane. Is formed in a substantially E shape together with the connecting piece. However, the magnetic pole faces 2A, 2
Strictly speaking, the end faces of the leg pieces 2a, 2b, 2b to be B, 2B are not in the same plane, and in particular, the magnetic pole faces 2B, 2B of the side leg pieces 2b, 2b are slightly inclined.
【００２６】具体的には、この実施例では次のような寸
法にしている。すなわち、中央脚片2aは、その磁極面2A
の横幅 (脚片の並設方向) を５mm、縦幅 (紙面の直交方
向)を１２mmとし、磁極面2Aでない角棒部分を断面形状
が５mmの正方形としている。つまり、磁極面2Aは角棒部
分より拡張されている。Specifically, in this embodiment, the dimensions are as follows. That is, the central leg piece 2a has a magnetic pole surface 2A
Has a width of 5 mm (the direction in which the leg pieces are arranged in parallel), a vertical width (a direction perpendicular to the paper surface) of 12 mm, and the square rod portion that is not the magnetic pole surface 2A is a square with a cross section of 5 mm. That is, the magnetic pole surface 2A is expanded from the square bar portion.
【００２７】また、側部脚片2b,2b は、その磁極面2B,2
B の横幅を５．５mm、縦幅を１２mmとし、磁極面2B,2B
でない角棒部分は内方がえぐられたようにして横幅を
２．５mmとしている。そして、磁極面2Aと磁極面2B,2B
の間隙は１mmである。また、全体の高さは１４．５mmと
している。これら脚片2a,2b,2bの形状は、後述する可動
子ブロックとの関係とともに、励磁コイル3 の収容状態
も考慮して決定する。Further, the side leg pieces 2b, 2b have their magnetic pole surfaces 2B, 2b.
The width of B is 5.5mm and the vertical width is 12mm.
The non-square bar part has a width of 2.5 mm as if the inside was scooped out. Then, the magnetic pole surface 2A and the magnetic pole surfaces 2B and 2B
The gap is 1 mm. The total height is 14.5 mm. The shapes of these leg pieces 2a, 2b, 2b are determined in consideration of the housed state of the exciting coil 3 as well as the relationship with a mover block described later.
【００２８】次に、本発明の重要部分である側部脚片2
b,2b の磁極面2B,2B について説明する。この磁極面2B,
2B は、図２に示すように、中央に向かうに従い、高さ
が低くなるように形成してある。磁極面2Aを基準にした
場合、外方側は磁極面2Aより高く、内方側は磁極面2Aよ
り低く、その傾斜の程度は１／７としている。Next, the side leg piece 2 which is an important part of the present invention
The magnetic pole surfaces 2B and 2B of b and 2b will be described. This pole face 2B,
As shown in FIG. 2, 2B is formed so that its height becomes lower toward the center. When the magnetic pole surface 2A is used as a reference, the outer side is higher than the magnetic pole surface 2A, the inner side is lower than the magnetic pole surface 2A, and the degree of inclination is 1/7.
【００２９】可動子ブロック4 は、永久磁石5 、ばね部
材6,6 、支持台7 、磁路形成部8 により構成される。永
久磁石5 は、薄板状であり、固定子2 の各磁極面2A,2B,
2Bに対向し各脚片2a,2b,2bが並設される方向に２個の磁
石部5a,5b を有している。２個の磁石部5a,5b は、各脚
片2a,2b,2bが並設される方向に異なる２個の極性が存在
するよう厚さ方向 (中央脚片の軸線方向) に着磁され、
後述する支持台7 に取着される。磁石部5a,5b の厚さ方
向の一方の面は、永久磁石5 の磁極面5A,5B となる。こ
の永久磁石5 は、厚さを１mm、横幅を１２mm、従って各
磁石部5a,5b の横幅を６mm、縦幅を１２mmとしている。The mover block 4 is composed of a permanent magnet 5, spring members 6, 6, a support base 7, and a magnetic path forming portion 8. The permanent magnet 5 is in the shape of a thin plate, and has a magnetic pole surface 2A, 2B,
It has two magnet parts 5a, 5b in a direction facing the 2B and in which the leg pieces 2a, 2b, 2b are arranged in parallel. The two magnet parts 5a, 5b are magnetized in the thickness direction (the axial direction of the central leg piece) so that there are two different polarities in the direction in which the leg pieces 2a, 2b, 2b are arranged in parallel,
It is attached to a support base 7 described later. One surface in the thickness direction of the magnet portions 5a, 5b becomes the magnetic pole surfaces 5A, 5B of the permanent magnet 5. The permanent magnet 5 has a thickness of 1 mm and a lateral width of 12 mm. Therefore, the lateral width of each magnet portion 5a, 5b is 6 mm and the longitudinal width is 12 mm.
【００３０】ばね部材6,6 は、長板状の板ばねであり、
具体的には板厚を０．１２５mmとしている。支持台7
は、大略台形状の支持基部7aと、その端部から大略Ｌ字
状に連設された固定連設部7b,7b からなっている。前述
した永久磁石5 は、支持基部7aに、磁極面5A,5B が僅か
に突出した状態でもって取着される。また、ばね部材6,
6 は、その基端は例えば電気かみそりのケースといった
固定部材11、あるいは先の例に示したものを変形させた
ばね固定部材10に固定され、その先端は固定連設部7b,7
b を支持している。この場合、永久磁石5 の磁極面5A,5
B と中央脚片2aの磁極面2Aとは平行となるよう具体的に
は０．５mmの磁気空隙G が形成されるようにする。ま
た、ばね部材6,6 の固定中心から支持中心までの距離を
１３mmとしている。磁路形成部8 は、磁性材料により大
略台形状に形成され、永久磁石5 の磁極面5A,5B の反対
側の端面に、２個の極性に十分に跨がって当接するよう
永久磁石5 及び／又は支持台7 に取着される。The spring members 6, 6 are long plate-shaped leaf springs,
Specifically, the plate thickness is 0.125 mm. Support base 7
Includes a support base 7a having a substantially trapezoidal shape, and fixed connecting portions 7b, 7b connected from the end thereof in a substantially L shape. The above-mentioned permanent magnet 5 is attached to the support base 7a with the magnetic pole surfaces 5A and 5B slightly protruding. In addition, the spring member 6,
6, its base end is fixed to a fixing member 11 such as a case of an electric razor, or a spring fixing member 10 obtained by deforming the one shown in the above example, and its tip end is fixed connecting portions 7b, 7
Supports b. In this case, the pole faces 5A, 5A of the permanent magnet 5
Specifically, a magnetic gap G of 0.5 mm is formed so that B and the magnetic pole surface 2A of the central leg piece 2a are parallel to each other. Further, the distance from the fixed center of the spring members 6,6 to the support center is 13 mm. The magnetic path forming portion 8 is formed of a magnetic material in a substantially trapezoidal shape, and the permanent magnet 5 is made to contact the end surface of the permanent magnet 5 on the opposite side of the magnetic pole surfaces 5A and 5B across the two polarities sufficiently. And / or attached to a support 7.
【００３１】これにより、可動子ブロック4 は、永久磁
石5 の２個の磁石部5a,5b が並ぶ方向に移動可能な状態
に支持される。また、永久磁石5 の磁極面5A,5B と固定
子ブロック1 の磁極面2A,2B,2Bとの間には、全体的には
略一定の、詳しくは、磁極面5A,5B と磁極面2A間は一
定、磁極面5A,5B と磁極面2B,2B 間は中央に向かうに従
い順次大きくなるように、換言すると、内方に向かうに
従い永久磁石5 より遠ざかるように、互いに非平行に形
成される。As a result, the mover block 4 is supported so as to be movable in the direction in which the two magnet portions 5a and 5b of the permanent magnet 5 are lined up. Further, between the magnetic pole surfaces 5A, 5B of the permanent magnet 5 and the magnetic pole surfaces 2A, 2B, 2B of the stator block 1, there is a substantially constant overall, more specifically, the magnetic pole surfaces 5A, 5B and 2A. The distance between the magnetic pole surfaces 5A, 5B and the magnetic pole surfaces 2B, 2B is gradually increased toward the center, in other words, the distance between the magnetic pole surfaces 5A, 5B and the magnetic pole surfaces 2B, 2B is gradually increased toward the center. .
【００３２】この電磁駆動装置は、励磁コイル3 を励磁
しないとき、ばね部材6,6 は略フリー状態となるととも
に、永久磁石5 の磁束が流れて、永久磁石5 の中心、す
なわち両磁石部5a,5b の境界部分が中央脚片2aの磁極面
2Aの中心に一致している。永久磁石5 の磁束の大半は、
磁石部5a→磁極面5A→磁気空隙G →左磁極面2B→左側部
脚片2b→連結片→右側部脚片2b→右磁極面2B→磁気空隙
G →磁極面5B→磁石部5b→磁路形成部8 →磁石部5aとい
う磁路を流れる。In this electromagnetic drive device, when the exciting coil 3 is not excited, the spring members 6 and 6 are in a substantially free state, and the magnetic flux of the permanent magnet 5 flows so that the center of the permanent magnet 5, that is, both magnet portions 5a. , 5b is the magnetic pole surface of the central leg 2a
It coincides with the center of 2A. Most of the magnetic flux of the permanent magnet 5 is
Magnet part 5a → pole face 5A → magnetic gap G → left pole face 2B → left leg piece 2b → connecting piece → right leg leg 2b → right pole face 2B → magnetic gap
G → magnetic pole surface 5B → magnet portion 5b → magnetic path forming portion 8 → flows through the magnetic path of magnet portion 5a.
【００３３】次に、励磁コイル3 をパルス状の交番直流
電圧でもって励磁すると、先ず、磁極面2Aと磁極面2B,2
B に異極性、例えば磁極面2AにＳ極、磁極面2B,2B にＮ
極が現れ、可動子ブロック4 の各磁極面5A,5B との間に
吸引、反発力が作用し、ばね部材6,6 を撓ませながら可
動子ブロック4 が所定方向に移動する。詳しくは、励磁
による磁束は、磁極面5Aと左磁極面2B間の磁気空隙G で
は相殺され、磁極面5Bと右磁極面2B間の磁気空隙G では
重畳され、結局可動子ブロック4 は右磁極面2B側に移動
する。Next, when the exciting coil 3 is excited by a pulsed alternating DC voltage, first, the magnetic pole surface 2A and the magnetic pole surfaces 2B, 2 are first excited.
B has different polarity, for example, S pole on pole face 2A and N on pole faces 2B and 2B.
A pole appears, and attraction and repulsive force act between the magnetic pole surfaces 5A and 5B of the mover block 4, causing the mover block 4 to move in a predetermined direction while bending the spring members 6 and 6. Specifically, the magnetic flux generated by the excitation is canceled by the magnetic gap G between the magnetic pole surface 5A and the left magnetic pole surface 2B, and is superimposed on the magnetic gap G between the magnetic pole surface 5B and the right magnetic pole surface 2B. Move to side 2B.
【００３４】ここで注目すべきことは、磁極面2B,2B に
面する磁気空隙G における磁束の流れ状態である。すな
わち、その磁束は、磁極面2B,2B が内方に向かうに従い
永久磁石5 より遠ざかるように磁極面5A,5B に対し非平
行であるため、中央脚片の軸線に平行な基準線に対し、
固定子側が外方に所定角度拡がるように流れるので、可
動子ブロックの運動に対する磁束の有効成分が増大す
る。すなわち、可動子ブロック4 の移動方向に傾斜する
磁束の成分が増加し、従って、可動子ブロック4の復帰
静止位置 (移動範囲の中心位置) からの変位量が大きく
なっても十分な推力が確保できるのである。What should be noted here is the flow state of the magnetic flux in the magnetic gap G facing the magnetic pole surfaces 2B, 2B. That is, the magnetic flux is non-parallel to the magnetic pole surfaces 5A and 5B so that the magnetic pole surfaces 2B and 2B move away from the permanent magnet 5 as the magnetic pole surfaces 2B and 2B move inward.
Since the stator side flows outwardly by a predetermined angle, the effective component of the magnetic flux with respect to the movement of the mover block increases. That is, the component of the magnetic flux that tilts in the moving direction of the mover block 4 increases, and therefore sufficient thrust is secured even if the displacement amount from the return stationary position (center position of the moving range) of the mover block 4 increases. You can do it.
【００３５】励磁コイル3 への励磁は、可動子ブロック
4 が最大変位に至る前の段階で停止する。可動子ブロッ
ク4 は、直流電圧が零となっても、慣性力により最大変
位位置まで移動し、その位置に至ったとき、逆方向の直
流電圧でもって再び励磁コイル3 を励磁する。これによ
り、磁極面2Aと磁極面2Bに反対の異極性が現れ、ばね部
材6,6 のばね力と磁気的な吸引、反発力が作用して可動
子ブロック4 が復帰方向に移動する。この場合の永久磁
石5 による磁束と励磁による磁束の相殺、重畳関係は前
述のものと逆の関係になる。そして、この動作は、パル
ス状の交番直流電圧でもって励磁している間、繰り返
す。The excitation of the excitation coil 3 is performed by moving the mover block.
4 stops before reaching the maximum displacement. Even if the DC voltage becomes zero, the mover block 4 moves to the maximum displacement position by the inertial force, and when reaching that position, the exciting coil 3 is excited again by the DC voltage in the opposite direction. As a result, opposite polarities appear on the magnetic pole surface 2A and the magnetic pole surface 2B, and the spring force of the spring members 6, 6 and the magnetic attraction and repulsion force act to move the mover block 4 in the returning direction. In this case, the relationship of canceling and superimposing the magnetic flux due to the permanent magnet 5 and the magnetic flux due to the excitation is opposite to that described above. Then, this operation is repeated while being excited by the pulsed alternating DC voltage.
【００３６】本願発明者らは、従来の技術の項で説明し
たものと本実施例のものにつき、復帰静止位置 (移動範
囲の中心位置) とそこから１．５mm移動した位置におけ
る可動子ブロックの推力を測定したところ、次のような
結果を得た。The inventors of the present invention, regarding the one described in the section of the prior art and the one of the present embodiment, move the movable block at the return rest position (center position of the moving range) and the position moved by 1.5 mm therefrom. When the thrust was measured, the following results were obtained.
【００３７】 従来のもの＝０．６３７〔Ｎ〕，０．１７ 〔Ｎ〕 本実施例 ＝０．６３８〔Ｎ〕，１．０６６〔Ｎ〕 この測定結果から明らかなように、従来のものは復帰静
止位置 (移動範囲の中心位置) からの変位量が大きくな
ると大幅に推力が低下するのに対し、本実施例のものは
むしろ推力が増加している。従って、本実施例のもの
は、従来のものより振幅、すなわち変位量を大きくする
ことが可能となる。Conventional one = 0.637 [N], 0.17 [N] This embodiment = 0.638 [N], 1.066 [N] As is apparent from the measurement results, the conventional one is When the displacement amount from the return stationary position (center position of the moving range) becomes large, the thrust is significantly reduced, whereas in the present embodiment, the thrust is rather increased. Therefore, in the case of the present embodiment, the amplitude, that is, the amount of displacement can be made larger than that of the conventional one.
【００３８】なお、本実施例では、側部脚片と永久磁石
の磁極面によって形成される磁気空隙が中央に向かうに
従い順次大きくなるよう互いに非平行に形成することに
ついて、側部脚片の磁極面を内方に向かうに従い永久磁
石より遠ざかるよう形成した構成を説明したが、永久磁
石の磁極面を内方に向かうに従い側部脚片の磁極面より
遠ざかるよう形成してもよい。In this embodiment, the magnetic gaps formed by the side leg pieces and the magnetic pole surfaces of the permanent magnets are formed non-parallel to each other such that they gradually increase toward the center. Although the configuration has been described in which the surface is formed so as to be further away from the permanent magnet as it goes inward, the magnetic pole surface of the permanent magnet may be formed so as to be further away from the magnetic pole surface of the side leg piece as it goes inward.
【００３９】次に、本発明の第２実施例を図３及び図４
に基づいて説明する。このものは、先の実施例における
側部脚片2b,2b の磁極面2B,2B を傾斜させないようにし
たもので、従って、外観的には図６に示すものと類似し
たものとなり、固定子側の磁極面2A,2B,2Bと可動子側の
磁極面5A,5B によって形成される磁気空隙G は約０．５
mmで略一定に形成されている他は、先の実施例の寸法と
略同様である。Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on. This is one in which the pole faces 2B, 2B of the side leg pieces 2b, 2b in the previous embodiment are not tilted, and therefore the appearance is similar to that shown in FIG. Side magnetic pole surfaces 2A, 2B, 2B and magnetic pole surfaces 5A, 5B on the mover side have a magnetic gap G of about 0.5.
The dimensions are substantially the same as those in the previous embodiment except that they are formed to be substantially constant in mm.
【００４０】そして、このものの永久磁石5 の磁石部5
a,5b は、その磁化方向が中央脚片2aの軸線に平行な基
準線に対し、所定角度θだけ傾くよう磁化されている。
この実施例では、所定角度θを４５°としている。Then, the magnet part 5 of the permanent magnet 5 of this thing
The a and 5b are magnetized so that their magnetization directions are inclined by a predetermined angle θ with respect to a reference line parallel to the axis of the central leg piece 2a.
In this embodiment, the predetermined angle θ is 45 °.
【００４１】本願発明者らは、従来の技術の項で説明し
たものと本実施例のものにつき、復帰静止位置 (移動範
囲の中心位置) とそこから１．５mm移動した位置におけ
る可動子ブロックの推力を測定したところ、次のような
結果を得た。The inventors of the present invention, regarding the one described in the section of the prior art and the one of this embodiment, move the movable element block at the return stationary position (the center position of the moving range) and the position moved 1.5 mm therefrom. When the thrust was measured, the following results were obtained.
【００４２】 従来のもの＝０．６３７〔Ｎ〕，０．１７ 〔Ｎ〕 本実施例 ＝０．５０６〔Ｎ〕，０．４２１〔Ｎ〕 また、本願発明者らは、所定角度θを３０°とした別の
実施例についても可動子ブロックの推力を測定したとこ
ろ、次のような結果を得た。Conventional example = 0.637 [N], 0.17 [N] This example = 0.506 [N], 0.421 [N] Further, the inventors of the present invention set the predetermined angle θ to 30 When the thrust of the mover block was measured for another example in which the angle was 0, the following results were obtained.
【００４３】 別の実施例 ＝０．５３９〔Ｎ〕，０．４１０〔Ｎ〕 この測定結果から明らかなように、従来のものは復帰静
止位置 (移動範囲の中心位置) からの変位量が大きくな
ると大幅に推力が低下するのに対し、本実施例のものは
復帰静止位置 (移動範囲の中心位置) では少し低下する
ものの、変位量が大きくなると従来のものより大幅に大
きい値を示している。従って、本実施例のものも、従来
のものより振幅、すなわち変位量を大きくすることが可
能となるのである。Another Example = 0.539 [N], 0.410 [N] As is clear from the measurement results, the conventional one has a large displacement amount from the return stationary position (center position of the moving range). In this case, the thrust is significantly reduced, whereas in the present embodiment, although it is slightly reduced at the returning stationary position (center position of the moving range), when the displacement is large, the value is significantly larger than that of the conventional one. . Therefore, also in the case of this embodiment, the amplitude, that is, the amount of displacement can be made larger than that of the conventional one.
【００４４】なお、励磁コイルを励磁するには、インバ
ータ回路を用いて２００Hz程度の周波数にするのが好ま
しい。In order to excite the exciting coil, it is preferable to use an inverter circuit and set the frequency to about 200 Hz.
【００４５】また、ばね部材は、その長さを長くする
程、可動子ブロックの往復運動が直線に近づくととも
に、ばね定数も小さくなって好ましい。The longer the length of the spring member, the more preferable the reciprocating motion of the mover block becomes closer to a straight line and the smaller the spring constant.
【００４６】[0046]
【発明の効果】請求項１記載の電磁駆動装置は、側部脚
片と永久磁石の両磁極面によって形成される磁気空隙に
おける磁束は、中央脚片の軸線に平行な基準線に対し、
固定子側が外方に所定角度拡がるように流れるので、可
動子ブロックの運動に対する磁束の有効成分が増大し、
略直線往復運動する可動子ブロックの復帰静止位置 (移
動範囲の中心位置) からの変位量が大きくなっても十分
な推力が確保できる。According to the electromagnetic drive device of the first aspect, the magnetic flux in the magnetic gap formed by both the side leg pieces and the magnetic pole surfaces of the permanent magnets is larger than the reference line parallel to the axis of the central leg piece.
Since the stator side flows outwardly by a predetermined angle, the effective component of the magnetic flux with respect to the movement of the mover block increases,
Sufficient thrust force can be secured even if the displacement amount from the return stationary position (center position of the moving range) of the mover block that reciprocates substantially linearly increases.
【００４７】請求項２記載の電磁駆動装置は、請求項１
記載の作用効果を得るのに、側部脚片と永久磁石の磁極
面となる端面を構造的に設定するだけで可能となる。According to a second aspect of the present invention, there is provided an electromagnetic drive apparatus according to the first aspect.
In order to obtain the above-described effects, it is possible only by structurally setting the side leg pieces and the end faces that are the magnetic pole faces of the permanent magnets.
【００４８】請求項３記載の電磁駆動装置は、請求項２
記載の作用効果に加え、可動子ブロックの形状、構造が
簡単なものとなる。The electromagnetic driving device according to claim 3 is the electromagnetic driving device according to claim 2.
In addition to the effects described above, the shape and structure of the mover block is simplified.
【００４９】請求項４記載の電磁駆動装置は、請求項１
記載の作用を得るのに、側部脚片と永久磁石の磁極面と
なる端面をそれぞれ略同一平面内に位置させるという通
常の構造にて可能となる。An electromagnetic drive device according to a fourth aspect is the electromagnetic drive device according to the first aspect.
In order to obtain the described action, it is possible to adopt a usual structure in which the side leg pieces and the end faces that are the magnetic pole faces of the permanent magnet are located in substantially the same plane.
【００５０】請求項５記載の電磁駆動装置は、請求項４
記載の作用効果に加え、より大きい推力が確保できるも
のとなる。The electromagnetic drive device according to claim 5 is the electromagnetic drive device according to claim 4.
In addition to the described effects, a larger thrust can be secured.
【図１】本発明の第１実施例を示す正面図である。FIG. 1 is a front view showing a first embodiment of the present invention.
【図２】その要部拡大図である。FIG. 2 is an enlarged view of a main part thereof.
【図３】本発明の第２実施例を示す正面図である。FIG. 3 is a front view showing a second embodiment of the present invention.
【図４】その要部拡大図である。FIG. 4 is an enlarged view of a main part thereof.
【図５】従来例を示す斜視図である。FIG. 5 is a perspective view showing a conventional example.
【図６】別の従来例を示す正面図である。FIG. 6 is a front view showing another conventional example.
1 固定子ブロック 2 固定子 2a 固定子の中央脚片 2A 中央脚片の磁極面 2b 固定子の側部脚片 2B 側部脚片の磁極面 3 励磁コイル 4 可動子ブロック 5 永久磁石 5a,5b 永久磁石の磁石部 5A,5B 磁石部の磁極面 6 ばね部材 7 支持台 8 磁路形成部 G 磁気空隙 1 Stator block 2 Stator 2a Stator center leg 2A Center leg pole face 2b Stator side leg 2B Side leg pole face 3 Excitation coil 4 Mover block 5 Permanent magnet 5a, 5b Magnet part of permanent magnet 5A, 5B Magnetic pole surface of magnet part 6 Spring member 7 Support 8 Magnetic path forming part G Magnetic gap
Claims (5)
磁極面となる各脚片の端面が略同一平面内に位置するよ
う形成された固定子と、固定子の中央脚片の磁極面と側
部脚片の磁極面が逆極性になるよう励磁するべく固定子
に巻装された励磁コイルと、を有する固定子ブロック
と、 固定子の各磁極面に対向し各脚片が並設される方向に異
なる２個の極性が存在するよう大略中央脚片の軸線方向
に着磁された永久磁石と、永久磁石の磁極面と固定子ブ
ロックの磁極面と間に略一定の磁気空隙が形成されかつ
永久磁石を２個の極性が存在する方向に移動可能な状態
に支持するばね部材と、を有する可動子ブロックと、 を有する電磁振動装置において、 前記側部脚片と永久磁石の磁極面によって形成される磁
気空隙における磁束を、中央脚片の軸線に平行な基準線
に対し、固定子側が外方に所定角度拡がるよう構成して
なる電磁振動装置。1. A stator having a central leg piece and side leg pieces on both sides thereof so that the end faces of the leg pieces serving as magnetic pole surfaces are located in substantially the same plane, and the central leg piece of the stator. Of the stator block having an exciting coil wound around the stator so as to excite the magnetic pole surface of the side leg piece and the magnetic pole surface of the side leg piece, and each leg piece facing each magnetic pole surface of the stator. Between the permanent magnets magnetized in the axial direction of the central leg piece so that there are two different polarities in the direction in which they are arranged in parallel, and the magnetic pole surface of the permanent magnet and the magnetic pole surface of the stator block are substantially constant. A mover block having a spring member that supports a permanent magnet movably in a direction in which two polarities exist and in which a magnetic gap is formed, and an electromagnetic vibration device having: The magnetic flux in the magnetic gap formed by the magnetic pole faces of the magnet is aligned with the axis of the central leg piece. An electromagnetic vibration device configured such that the stator side expands outward by a predetermined angle with respect to parallel reference lines.
それらによって形成される磁気空隙が中央に向かうに従
い順次大きくなるよう互いに非平行に形成したことを特
徴とする請求項１記載の電磁振動装置。2. The side leg and the magnetic pole surface of the permanent magnet are
2. The electromagnetic vibration device according to claim 1, wherein the magnetic air gaps formed by them are formed non-parallel to each other such that they gradually increase toward the center.
面を、内方に向かうに従い永久磁石より遠ざかるよう形
成してなる請求項２記載の電磁駆動装置。3. The electromagnetic drive device according to claim 2, wherein the magnetic pole surfaces of the side leg pieces of the stator block are formed so as to be farther from the permanent magnet as they go inward.
脚片の軸線に平行な基準線に対し、所定角度傾くよう磁
化されていることを特徴とする請求項１記載の電磁振動
装置。4. The electromagnetic vibration device according to claim 1, wherein the permanent magnet is magnetized so that its magnetization direction is inclined at a predetermined angle with respect to a reference line parallel to the axis of the central leg piece.
た請求項４記載の電磁振動装置。5. The electromagnetic vibration device according to claim 4, wherein the predetermined angle is 30 ° to 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06320197A JP3116756B2 (en) | 1994-07-29 | 1994-12-22 | Electromagnetic drive |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6-177946 | 1994-07-29 | ||
| JP17794694 | 1994-07-29 | ||
| JP06320197A JP3116756B2 (en) | 1994-07-29 | 1994-12-22 | Electromagnetic drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0898493A true JPH0898493A (en) | 1996-04-12 |
| JP3116756B2 JP3116756B2 (en) | 2000-12-11 |
Family
ID=26498292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06320197A Expired - Fee Related JP3116756B2 (en) | 1994-07-29 | 1994-12-22 | Electromagnetic drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3116756B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470722A (en) * | 2013-09-06 | 2013-12-25 | 上海奔腾电工有限公司 | Non-contact motion mode conversion device |
| KR101512838B1 (en) * | 2014-05-22 | 2015-04-20 | 올텍오토메이션(주) | Dual force voice coil linear actuator |
-
1994
- 1994-12-22 JP JP06320197A patent/JP3116756B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470722A (en) * | 2013-09-06 | 2013-12-25 | 上海奔腾电工有限公司 | Non-contact motion mode conversion device |
| KR101512838B1 (en) * | 2014-05-22 | 2015-04-20 | 올텍오토메이션(주) | Dual force voice coil linear actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3116756B2 (en) | 2000-12-11 |
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