JPH0746790A - Motor with braker - Google Patents
Motor with brakerInfo
- Publication number
- JPH0746790A JPH0746790A JP18478093A JP18478093A JPH0746790A JP H0746790 A JPH0746790 A JP H0746790A JP 18478093 A JP18478093 A JP 18478093A JP 18478093 A JP18478093 A JP 18478093A JP H0746790 A JPH0746790 A JP H0746790A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- permanent magnet
- fixed
- braking device
- comb teeth
- 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
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はモータ軸に制動装置を備
えたモータに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor having a motor shaft provided with a braking device.
【０００２】[0002]
【従来の技術】図５は従来の制動装置を備えた電動機の
制動装置部分の構造を示すものである。図５において、
１１はモータ軸５５に固定された制動板である。モータ
軸５５は電動機の回転子１６に固定されている。１７は
モータフレーム４に設けられたハウジングで、１２はハ
ウジング１７に収納されたブレーキシューである。１３
は圧縮コイルバネで、１８はバネ押さえ板である。2. Description of the Related Art FIG. 5 shows a structure of a braking device portion of an electric motor having a conventional braking device. In FIG.
Reference numeral 11 is a braking plate fixed to the motor shaft 55. The motor shaft 55 is fixed to the rotor 16 of the electric motor. Reference numeral 17 is a housing provided in the motor frame 4, and 12 is a brake shoe housed in the housing 17. Thirteen
Is a compression coil spring, and 18 is a spring pressing plate.
【０００３】以上のように構成されたブレーキ装置の動
作について、以下に説明する。まず圧縮コイルバネ１３
はバネ押さえ板１８により片端を押さえられることで圧
縮力が生じる。ブレーキシュー１２はこの圧縮力を受け
た状態で制動板１１と接触し、この接触面の摩擦抵抗が
制動力となり、モータ軸５５の減速ブレーキ力および静
止ブレーキ力として機能することができる。The operation of the brake device constructed as described above will be described below. First, the compression coil spring 13
A compressing force is generated by pressing one end of the spring pressing plate 18. The brake shoe 12 comes into contact with the braking plate 11 while receiving this compressive force, and the frictional resistance of this contact surface becomes a braking force, and can function as a decelerating braking force and a stationary braking force of the motor shaft 55.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら上記の従
来の構成では、電動機が回転している時も常時制動板１
１とブレーキシュー１２は摩擦しているので、摩擦音の
発生および摩擦面の磨耗は避け難く、また磨耗により制
動力に変化が起こり、いずれは制動力が得られなくなる
という問題を有していた。これに対処するためブレーキ
シュー１２の材質を変え、また制動板の面粗さ調整、材
質、硬さを変えるなどして摩擦音の低減や磨耗の低減を
図っていたが、いずれも完全に問題解消するに至ってい
ない。However, in the above-mentioned conventional configuration, the braking plate 1 is constantly operated even when the electric motor is rotating.
Since 1 and the brake shoe 12 are in friction with each other, generation of a friction noise and abrasion of the friction surface are unavoidable, and there is a problem that the braking force is changed due to the abrasion and eventually the braking force cannot be obtained. In order to deal with this, the material of the brake shoe 12 was changed, the surface roughness of the braking plate was adjusted, and the material and hardness were changed to reduce the frictional noise and wear, but all of them solved the problem completely. Has not yet reached.
【０００５】本発明は上記従来の問題点を解決するもの
で、簡単な構成によりブレーキの摩擦音をなくし、半永
久的に安定した減速ブレーキ力と静止保持力が得られる
制動装置付電動機を提供することを目的とする。The present invention solves the above-mentioned problems of the prior art, and provides a motor with a braking device that eliminates the frictional noise of the brake with a simple structure and can obtain a decelerating braking force and a stationary holding force semipermanently. With the goal.
【０００６】[0006]
【課題を解決するための手段】この目的を達成するため
に本発明の制動装置付電動機は、その制動装置がモータ
フレームに固定された円筒状の内周側に多極に着磁した
永久磁石と、外周に櫛歯を形成した磁性材料よりなるロ
ータを前記永久磁石と小空隙を介して、前記永久磁石の
内側を同心上に回転するようモータ軸に固定する構成を
有する。In order to achieve this object, a motor with a braking device of the present invention is a permanent magnet magnetized in a multi-pole manner on the inner peripheral side of a cylinder fixed to a motor frame. And a rotor made of a magnetic material having comb teeth formed on the outer periphery thereof is fixed to the motor shaft so as to rotate concentrically inside the permanent magnet via the small gap with the permanent magnet.
【０００７】[0007]
【作用】この構成によって、モータフレームに固定され
た円筒状の内周側に多極に着磁した永久磁石の磁気吸引
力によって、外周に櫛歯を形成した磁性材料よりなるロ
ータ櫛歯部が吸引される。このとき、永久磁石の着磁数
とロータの櫛歯数の歯数比が整数のときは大きな静止ブ
レーキが得られるが、モータトルクに対比して静止ブレ
ーキを小さくする必要があるとき、永久磁石の着磁数と
ロータの櫛歯数の歯数比を整数でない組み合わせにする
ことで、モータトルクに対比した最適な減速ブレーキ力
と静止ブレーキ力を設定することができ、接触部を有す
ることなく安定した制動力を得ることができる。With this structure, the rotor comb teeth portion made of a magnetic material having comb teeth formed on the outer circumference is formed by the magnetic attraction force of the permanent magnet fixed to the motor frame and having multiple poles magnetized on the inner circumference side. Sucked. At this time, a large static brake can be obtained when the ratio of the number of magnetized permanent magnets to the number of comb teeth of the rotor is an integer, but when it is necessary to reduce the static brake relative to the motor torque, By setting the combination of the number of magnets and the number of comb teeth of the rotor to a non-integer combination, it is possible to set the optimum deceleration braking force and stationary braking force in comparison with the motor torque, and without having a contact part. A stable braking force can be obtained.
【０００８】[0008]
【実施例】（実施例１）以下本発明の一実施例につい
て、図面を参照しながら説明する。(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.
【０００９】図１および図２において、１は磁性材より
なるヨーク７を介し、モータフレーム４に固定された円
筒状の内周側に多極に着磁された永久磁石である。２は
磁性材料よりなるロータで、永久磁石１と小空隙６を介
して永久磁石１の内側同心上に回転するようモータ軸５
１に固定されている。３はロータ２の外周に形成された
櫛歯である。In FIGS. 1 and 2, reference numeral 1 denotes a permanent magnet, which is fixed to the motor frame 4 via a yoke 7 made of a magnetic material, and is magnetized in multiple poles on the inner peripheral side of the cylinder. Reference numeral 2 is a rotor made of a magnetic material, and the motor shaft 5 is arranged so as to rotate concentrically inside the permanent magnet 1 through the small gap 6 with the permanent magnet 1.
It is fixed at 1. Reference numeral 3 denotes comb teeth formed on the outer circumference of the rotor 2.
【００１０】以上のように構成された制動装置付電動機
について、その動作を説明する。まず、永久磁石１に着
磁した各Ｎ極から各々Ｓ極への磁束ループが形成され、
磁性材料よりなる櫛歯３に流入するので、モータが静止
状態のとき磁気吸引力が作用して静止ブレーキ力が得ら
れる。ここで、永久磁石の着磁数とロータの櫛歯数の歯
数比が整数のとき大きな静止ブレーキが得られるが、モ
ータトルクに対比して静止ブレーキを小さくする必要が
あるとき、永久磁石の着磁数とロータの櫛歯数の歯数比
を整数でない組み合わせにすることで、モータトルクに
対比した最適な減速ブレーキ力と静止ブレーキ力を設定
することができる。つぎにモータが回転しているときは
櫛歯３が上記磁束ループを切り、櫛歯３にうず電流が発
生し減速ブレーキを得ることができる。The operation of the electric motor with a braking device constructed as described above will be described. First, a magnetic flux loop from each N pole magnetized to the permanent magnet 1 to each S pole is formed,
Since it flows into the comb teeth 3 made of a magnetic material, when the motor is stationary, a magnetic attraction force acts and a stationary braking force is obtained. Here, a large static brake is obtained when the ratio of the number of magnetized permanent magnets to the number of comb teeth of the rotor is an integer, but when it is necessary to reduce the static brake relative to the motor torque, By setting the combination of the number of magnetizations and the number of comb teeth of the rotor to be a non-integer, it is possible to set the optimum deceleration braking force and stationary braking force in comparison with the motor torque. Next, when the motor is rotating, the comb teeth 3 cut the magnetic flux loop, and an eddy current is generated in the comb teeth 3 to obtain a deceleration brake.
【００１１】以上のように本実施例によれば、磁性材よ
りなるヨークを介してモータフレームに固定された円筒
状の内周側に多極に着磁した永久磁石と、外周に櫛歯を
形成した磁性材料よりなるロータを永久磁石と小空隙を
介して永久磁石の内側を同心上に回転するよう、モータ
軸に固定することによって摩擦部を有することなく静止
ブレーキ力と減速ブレーキ力を得ることができる。As described above, according to this embodiment, a cylindrical permanent magnet fixed to the motor frame through a yoke made of a magnetic material and having multiple poles magnetized on the inner peripheral side, and comb teeth on the outer periphery are provided. The rotor made of magnetic material is fixed to the motor shaft so that it rotates concentrically inside the permanent magnet through a small gap with the permanent magnet, so that stationary braking force and deceleration braking force are obtained without having a friction part. be able to.
【００１２】（実施例２）以下本発明の第２の実施例に
ついて、図面を参照しながら説明する。(Second Embodiment) A second embodiment of the present invention will be described below with reference to the drawings.
【００１３】図３および図４において、３１は磁性材料
よりなるヨーク３７を介し、モータフレーム４に固定さ
れた円板状側面に多極着磁した永久磁石である。３２は
磁性材料よりなるロータで、永久磁石３１と小空隙６を
介して永久磁石３１の着磁面と対面して回転するようモ
ータ軸５３に固定されている。３３はロータ３２の側面
に半径方向に形成された櫛歯である。以上は図１の構成
と異なる点でその動作は図１と同様なものである。In FIGS. 3 and 4, reference numeral 31 is a permanent magnet which is magnetized to the disc-shaped side surface fixed to the motor frame 4 via a yoke 37 made of a magnetic material. A rotor 32 made of a magnetic material is fixed to the motor shaft 53 so as to rotate facing the magnetized surface of the permanent magnet 31 via the permanent magnet 31 and the small gap 6. Reference numeral 33 denotes comb teeth formed on the side surface of the rotor 32 in the radial direction. The operation above is the same as that of FIG. 1 in that it is different from the configuration of FIG.
【００１４】なお、上記第１の実施例において永久磁石
１は内周側に着磁して、モータフレーム４に固定し、ロ
ータ２は外周に櫛歯を形成してモータ軸５１に固定した
が、永久磁石１は外周側に着磁してモータ軸５１に固定
し、ロータ２は内周に櫛歯を形成してモータフレーム４
に固定してもよい。また、第２の実施例では永久磁石３
１をモータフレーム４に固定しロータ３２をモータ軸５
３に固定したが、永久磁石３１をモータ軸５３に固定し
ロータ３２をモータフレーム４に固定してもよいことは
いうまでもない。In the first embodiment, the permanent magnet 1 is magnetized on the inner circumference side and fixed to the motor frame 4, and the rotor 2 is fixed to the motor shaft 51 by forming comb teeth on the outer circumference. The permanent magnet 1 is magnetized on the outer peripheral side and fixed to the motor shaft 51, and the rotor 2 is formed with comb teeth on the inner peripheral side to form the motor frame 4.
It may be fixed to. In addition, in the second embodiment, the permanent magnet 3
1 is fixed to the motor frame 4 and the rotor 32 is connected to the motor shaft 5
Although fixed to No. 3, it is needless to say that the permanent magnet 31 may be fixed to the motor shaft 53 and the rotor 32 may be fixed to the motor frame 4.
【００１５】[0015]
【発明の効果】以上のように本発明は、モータフレーム
に固定された円筒状の内周側に多極に着磁した永久磁石
と、外周に櫛歯を形成した磁性材料よりなるロータを、
永久磁石と小空隙を介し永久磁石の内側を同心上に回転
するようモータ軸に固定することにより、また永久磁石
の着磁数とロータの櫛歯数の歯数比を整数でない組み合
わせにすることによって、モータトルクと対比した最適
な静止ブレーキ力と減速ブレーキ力を得ることができ、
接触部を有しないことから摩擦音の発生を絶無とでき、
安定したブレーキ力を半永久的に発揮することができる
優れた制動装置付電動機を実現できるものである。As described above, according to the present invention, a cylindrical permanent magnet fixed to a motor frame and magnetized in multiple poles on the inner peripheral side, and a rotor made of a magnetic material having comb teeth formed on the outer periphery are provided.
By fixing the inner side of the permanent magnet to the motor shaft so as to rotate concentrically through the permanent magnet and a small air gap, and also by using a non-integer combination of the magnetizing number of the permanent magnet and the number of comb teeth of the rotor. The optimum static braking force and deceleration braking force in comparison with the motor torque can be obtained by
Since there is no contact part, the generation of friction noise can be eliminated,
It is possible to realize an excellent electric motor with a braking device that can exert a stable braking force semipermanently.
【図１】本発明の第１の実施例における制動装置付電動
機の部分切り欠き側断面図FIG. 1 is a partial cutaway side sectional view of an electric motor with a braking device according to a first embodiment of the present invention.
【図２】本発明の第１の実施例における制動装置付電動
機のロータの正面図FIG. 2 is a front view of a rotor of the electric motor with a braking device according to the first embodiment of the present invention.
【図３】本発明の第２の実施例における制動装置付電動
機の部分切り欠き側断面図FIG. 3 is a partial cutaway side sectional view of an electric motor with a braking device according to a second embodiment of the present invention.
【図４】本発明の第２の実施例における制動装置付電動
機のロータの正面図FIG. 4 is a front view of a rotor of an electric motor with a braking device according to a second embodiment of the present invention.
【図５】従来の制動装置付電動機の部分切り欠き側断面
図FIG. 5 is a partial cutaway side sectional view of a conventional electric motor with a braking device.
１，３１ 永久磁石 ２，３２ ロータ ３，３３ 櫛歯 ４ フレーム ６ 小空隙 ７，３７ ヨーク １１ 制動板 １２ ブレーキシュー １３ 圧縮コイルバネ １６ 回転子 １７ ハウジング １８ バネ押さえ板 ５１，５３，５５ モータ軸 1,31 Permanent Magnets 2,32 Rotor 3,33 Comb Teeth 4 Frame 6 Small Gap 7,37 Yoke 11 Braking Plate 12 Brake Shoe 13 Compression Coil Spring 16 Rotor 17 Housing 18 Spring Holding Plate 51,53,55 Motor Shaft
Claims (5)
周側に多極に着磁した永久磁石と、外周に櫛歯を形成し
た磁性材料よりなるロータを、前記永久磁石の内側を同
心上に回転するようモータ軸に固定した制動装置を具備
する制動装置付電動機。1. A rotor made of a magnetic material, which is fixed to a motor frame and has multiple poles magnetized on the inner peripheral side of a cylinder, and a magnetic material having comb teeth formed on the outer periphery, are concentrically arranged inside the permanent magnet. An electric motor with a braking device, which comprises a braking device fixed to a motor shaft so as to rotate around.
歯を形成した磁性材料よりなるステータと、円筒状の外
周に多極に着磁した永久磁石よりなるロータを前記ステ
ータの内側を同心上に回転するようモータ軸に固定した
制動装置を具備する制動装置付電動機。2. A stator made of a magnetic material, which is fixed to a motor frame and has comb teeth formed on its circumference, and a rotor made of a permanent magnet magnetized in a cylindrical outer shape with multiple poles are concentric inside the stator. An electric motor with a braking device comprising a braking device fixed to a motor shaft so as to rotate upward.
に多極に着磁した永久磁石と、櫛歯を半径方向に形成し
た磁性材料よりなるロータを前記永久磁石の着磁面と対
面して回転するようモータ軸に固定した制動装置を具備
する制動装置付電動機。3. A permanent magnet magnetized in multiple poles on a disk-shaped side surface fixed to a motor frame, and a rotor made of a magnetic material having comb teeth formed in a radial direction face a magnetized surface of the permanent magnet. An electric motor with a braking device that includes a braking device that is fixed to a motor shaft so that it rotates.
櫛歯を形成した磁性材料よりなるステータと、円板状の
側面に半径方向に多極に着磁した永久磁石よりなるロー
タを前記ステータの櫛歯と対面して回転するようモータ
軸に固定した制動装置を具備する制動装置付電動機。4. A stator made of a magnetic material fixed to a motor frame and having comb teeth formed in a radial direction, and a rotor made of a permanent magnet magnetized on a disk-shaped side surface in a radial direction with multiple poles are provided in the stator. An electric motor with a braking device comprising a braking device fixed to a motor shaft so as to rotate facing the comb teeth.
数比が整数でない組み合わせにした請求項１から４のい
ずれかに記載の制動装置付電動機。5. The electric motor with a braking device according to claim 1, wherein the permanent magnet has a magnetizing number and the rotor has a comb tooth number ratio which is not an integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05184780A JP3106781B2 (en) | 1993-07-27 | 1993-07-27 | Electric motor with braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05184780A JP3106781B2 (en) | 1993-07-27 | 1993-07-27 | Electric motor with braking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0746790A true JPH0746790A (en) | 1995-02-14 |
| JP3106781B2 JP3106781B2 (en) | 2000-11-06 |
Family
ID=16159174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05184780A Expired - Lifetime JP3106781B2 (en) | 1993-07-27 | 1993-07-27 | Electric motor with braking device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3106781B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1564868A1 (en) * | 2004-02-16 | 2005-08-17 | Minebea Co., Ltd. | Electric machine |
| DE102007017925A1 (en) * | 2007-04-13 | 2008-10-16 | Isel Automation Gmbh & Co. Kg | Rotational unit e.g. rotary unit, for use in e.g. milling machine, has outer ring of bearing unit removably connected with housing, and inner ring of bearing unit removably connected with stator or rotor of torque motor |
| CN105356659A (en) * | 2015-12-04 | 2016-02-24 | 江苏上骐集团有限公司 | Electric material conveying vehicle driving device and control method |
| JP2020511109A (en) * | 2017-02-10 | 2020-04-09 | ポータル・クレイン・パーツ・リミテッド | Electromechanical storm brake actuator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101723415B1 (en) | 2015-09-18 | 2017-04-05 | 엘지전자 주식회사 | Refrigerator |
-
1993
- 1993-07-27 JP JP05184780A patent/JP3106781B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1564868A1 (en) * | 2004-02-16 | 2005-08-17 | Minebea Co., Ltd. | Electric machine |
| DE102007017925A1 (en) * | 2007-04-13 | 2008-10-16 | Isel Automation Gmbh & Co. Kg | Rotational unit e.g. rotary unit, for use in e.g. milling machine, has outer ring of bearing unit removably connected with housing, and inner ring of bearing unit removably connected with stator or rotor of torque motor |
| CN105356659A (en) * | 2015-12-04 | 2016-02-24 | 江苏上骐集团有限公司 | Electric material conveying vehicle driving device and control method |
| JP2020511109A (en) * | 2017-02-10 | 2020-04-09 | ポータル・クレイン・パーツ・リミテッド | Electromechanical storm brake actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3106781B2 (en) | 2000-11-06 |
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