JPH02294245A - Motor with brake - Google Patents
Motor with brakeInfo
- Publication number
- JPH02294245A JPH02294245A JP11480489A JP11480489A JPH02294245A JP H02294245 A JPH02294245 A JP H02294245A JP 11480489 A JP11480489 A JP 11480489A JP 11480489 A JP11480489 A JP 11480489A JP H02294245 A JPH02294245 A JP H02294245A
- Authority
- JP
- Japan
- Prior art keywords
- core
- brake
- stator core
- magnetic pole
- movable
- 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.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 2
- 238000013016 damping Methods 0.000 abstract 5
- 238000010521 absorption reaction Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 19
- 230000000694 effects Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はブレーキ付き電動機において、制動トルクを
増すことができるようにしたものに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric motor with a brake that can increase braking torque.
ブレーキ付き電動機の従来例を第３図にもとづいて説明
する。この図は制動状態を示し、円筒状回転子１の端面
と対向してコ字形断面のアーマチュア２が軸方向に移動
可能に設けられ、アーマチュア２の垂直部の反回転子側
には円板状のブレーキ板３が配設されている。前記アー
マチュア２は水平部の先端部を板ばね４を介して軸受ブ
ラケソト５に支持させることにより軸方向に付勢され、
垂直部は固定子鉄心６の励磁に伴う電磁吸引力が作用す
る適当な間隔をおいて回転子１の端面と対向設置されて
いる。前記ブレーキ板３は回転子ｌとともに回転軸７に
嵌着され、アーマチュア２の垂直部と軸方向に対向する
外周部側面には環状のブレーキライニング８が接着剤等
で固着されている。前記電動機は固定子鉄心６が無励磁
の場合はアーマチュア２の垂直部が板ばね４の作用でブ
レーキ板３のブレーキライニング８に押しつけられて制
動状態となり、固定子鉄心６が励磁されるとこれに伴う
電磁吸引力でアーマチュア２を板ばね４に抗しブレーキ
板３から引き離してブレーキを釈放するようになってい
る（特開昭６２−２０３５３０号公報参照）。A conventional example of an electric motor with a brake will be explained based on FIG. This figure shows the braking state, in which an armature 2 with a U-shaped cross section is provided so as to be movable in the axial direction, facing the end surface of the cylindrical rotor 1, and a disc-shaped A brake plate 3 is provided. The armature 2 is biased in the axial direction by having the distal end of the horizontal portion supported by a bearing bracket 5 via a leaf spring 4.
The vertical portion is disposed opposite to the end surface of the rotor 1 at an appropriate interval so that an electromagnetic attractive force due to the excitation of the stator core 6 acts. The brake plate 3 is fitted onto the rotating shaft 7 together with the rotor 1, and an annular brake lining 8 is fixed with an adhesive or the like to a side surface of the outer peripheral portion of the armature 2 that faces the vertical portion of the armature 2 in the axial direction. In the electric motor, when the stator core 6 is not energized, the vertical part of the armature 2 is pressed against the brake lining 8 of the brake plate 3 by the action of the leaf spring 4, resulting in a braking state, and when the stator core 6 is energized, the motor is in a braking state. The armature 2 is pulled away from the brake plate 3 against the leaf spring 4 by the electromagnetic attractive force accompanying this, thereby releasing the brake (see Japanese Unexamined Patent Publication No. 62-203530).
前記構造では励磁に伴ってアーマチュア２に作用する固
定子鉄心６の電磁吸引力が小さいので板ばね４のばね力
を一定値以上に大きくするとブレーキを釈放できないこ
とがあり、これにより制動トルクを増すことができない
という欠点があった．この発明は前記の欠点を除去する
ために、電磁吸引力を大きくして制動トルクを増すこと
ができるようにしたブレーキ付き電動機を提供すること
を目的とする。In the above structure, the electromagnetic attraction force of the stator core 6 acting on the armature 2 due to excitation is small, so if the spring force of the leaf spring 4 is increased beyond a certain value, the brake may not be released, which increases the braking torque. The drawback was that it could not be done. SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, it is an object of the present invention to provide an electric motor with a brake that can increase braking torque by increasing electromagnetic attraction force.
（課題を解決するための手段〕
この発明は前記の目的を達成するために、筒状の固定子
鉄心１６で共通に包囲した円筒状の回転子１および円板
状の磁極鉄心１９と、これらを嵌着した回転軸１７の前
記磁極鉄心１９の反回転子１側に軸方向に移動可能には
め込んだ可動鉄心１２と、この可動鉄心１２の反磁極鉄
心１９側端面および要すればこれと軸方向に対向する固
定部１５に固着した制動板１８と、回転制動板１８を固
定部ｌ５に押しつけて制動作用を行う制動ばね１４とを
備え、前記可動鉄心１２と磁極鉄心１９の対向面を固定
子鉄心１６側に向くテーパ状に形成し、固定子鉄心１６
を励磁することにより可動鉄心１２を前記制動ばね１４
に抗し吸引してブレーキを釈放するようにしたものであ
る。(Means for Solving the Problems) In order to achieve the above object, the present invention includes a cylindrical rotor 1 and a disc-shaped magnetic pole core 19 that are commonly surrounded by a cylindrical stator core 16; A movable core 12 is fitted in the rotor 1 side of the magnetic pole core 19 of the rotary shaft 17 to be movable in the axial direction. It is equipped with a braking plate 18 fixed to a fixing part 15 facing in the direction, and a braking spring 14 that performs a braking action by pressing the rotary braking plate 18 against the fixing part l5, and fixes the facing surfaces of the movable iron core 12 and the magnetic pole iron core 19. The stator core 16 is formed into a tapered shape facing the child core 16 side.
By energizing the movable iron core 12, the braking spring 14
The brake is released by suction against the force.
前記可動鉄心１２は固定子鉄心１６で包囲される磁極鉄
心１９との対向面を固定子鉄心１６側に向《テーバ状に
形成したので外周端部が固定子鉄心１６の内周および磁
極鉄心ｌ９のテーパ面と適当な間隙をおいて磁路の一部
を構成することとなり、これにより固定子鉄心１６を励
磁すると可ｖＪ鉄心１２に大きな電磁吸引が作用する。The surface of the movable core 12 facing the magnetic pole core 19 surrounded by the stator core 16 is tapered toward the stator core 16 side, so that the outer circumferential end is close to the inner circumference of the stator core 16 and the magnetic pole core 19. A part of the magnetic path is formed with an appropriate gap between the tapered surface of the stator core 16 and a large electromagnetic attraction acts on the flexible vJ core 12 when the stator core 16 is excited.
したがって制動ばね１４のばね力を大きくして制動トル
クを増すことができる。Therefore, the spring force of the brake spring 14 can be increased to increase the braking torque.
第１図はこの発明の実施例を示すもので、第３図と同一
符号で示すものは同一部品である。この図は制動状態を
示し、回転軸１７に嵌着した円筒状の回転子１と円板状
の磁極鉄心１９とが筒状の固定子鉄心１６で共通に包囲
され、この固定子鉄心１６を内周に嵌着したコ字形断面
のフレーム２０およびこのフレーム２０の先端面に取付
けた軸受ブラケソト（固定部）１５のそれぞれ中心部で
軸受２１，２２を介して回転軸１７が支持されている。FIG. 1 shows an embodiment of the present invention, and the same parts as in FIG. 3 are denoted by the same reference numerals. This figure shows a braking state, in which the cylindrical rotor 1 fitted on the rotating shaft 17 and the disc-shaped magnetic pole core 19 are commonly surrounded by a cylindrical stator core 16, and this stator core 16 is surrounded by a cylindrical stator core 16. A rotating shaft 17 is supported through bearings 21 and 22 at the center of a frame 20 with a U-shaped cross section fitted on the inner periphery and a bearing bracket (fixed part) 15 attached to the distal end surface of the frame 20, respectively.
この回転軸１７の前記磁極鉄心１９０反回転子１側には
環状の可動鉄心１２が磁極鉄心１９の側面に突設した回
り止め用ピン２３と係合して軸方向にのみ移動可能には
め込まれている。前記可動鉄心１２と磁極鉄心１９はｆ
１性材からなり、可動鉄心１２の反磁極鉄心ｌ９側端面
および要すればこれと軸方向に対向する軸受ブラケソト
（固定部）１５の中心部の円筒状軸受ハウジング１５ａ
の端面にブレーキライニング等の環状制動機１８が接着
剤等で固着されている。また可動鉄心１２は磁極鉄心１
９との間にコイル状の制動ばね１４を圧縮して介挿する
ことにより軸方向に付勢され、固定子鉄心１６に巻装し
た固定子巻線２４に通電していない無励磁状態では回転
制動板１８が画定部１５に押しつけられて制動作用を行
うようになっている。さらに可動鉄心１２と磁極鉄心１
９の対向面は固定子鉄心ｌ６側に向くテーバ状に形成さ
れている。前記電動機は固定子巻線２４に通電して固定
子鉄心１６を励磁するとこれに伴う電磁吸引力で可動鉄
心ｌ２を制動ばね１４のばね力に抗し吸引して第２図に
示すように回転制動板ｌ８を固定部１５から引き離し、
これによりブレーキを釈放するようになっている。An annular movable iron core 12 is fitted into the rotating shaft 17 on the side opposite to the rotor 1 of the magnetic pole iron core 19 so as to be movable only in the axial direction by engaging with a detent pin 23 protruding from the side surface of the magnetic pole iron core 19. ing. The movable iron core 12 and the magnetic pole iron core 19 are f
The cylindrical bearing housing 15a is made of a magnetic material and is located at the end face of the antimagnetic pole iron core 19 side of the movable iron core 12 and, if necessary, at the center of the bearing bracket (fixed part) 15 that opposes this in the axial direction.
An annular brake 18 such as a brake lining is fixed to the end face of the brake member with adhesive or the like. Moreover, the movable iron core 12 is the magnetic pole iron core 1
By compressing and inserting a coiled braking spring 14 between the stator core 16 and the stator core 16, the coiled braking spring 14 is biased in the axial direction. A braking plate 18 is pressed against the defining portion 15 to perform a braking action. Furthermore, the movable iron core 12 and the magnetic pole iron core 1
The opposing surface of 9 is formed in a tapered shape facing toward the stator core 16. When the stator core 16 is excited by energizing the stator winding 24, the electric motor attracts the movable core 12 with the accompanying electromagnetic attraction force against the spring force of the braking spring 14 and rotates as shown in FIG. Separate the brake plate l8 from the fixed part 15,
This releases the brake.
前記実施例によれば可動鉄心１２は固定子鉄心１６で包
囲される磁極鉄心１９との対向面を固定子鉄心ｌ６側に
向くテーパ状に形成したので外周端部が固定子鉄心１６
の内周および磁極鉄心１９のテーパ面と適当な間隔をお
いて磁路の一部を構成することとなり、これにより固定
子鉄心１６を励磁すると可動鉄心１２に大きな軸方向の
電磁吸引力が作用する。したがって制動ばね１４のばね
力を大きくして制動トルクを増すことができる。According to the embodiment described above, the surface of the movable core 12 facing the magnetic pole core 19 surrounded by the stator core 16 is tapered toward the stator core 16, so that the outer circumferential end of the movable core 12 faces the stator core 16.
A part of the magnetic path is formed with an appropriate spacing between the inner periphery of the magnetic pole core 19 and the tapered surface of the magnetic pole core 19, so that when the stator core 16 is excited, a large electromagnetic attraction force in the axial direction acts on the movable core 12. do. Therefore, the spring force of the brake spring 14 can be increased to increase the braking torque.
また可動鉄心１２と磁極鉄心１９はいずれも回転軸１７
に設置されるのでテーパ面を精度を出して形成すること
ができる。Furthermore, both the movable iron core 12 and the magnetic pole iron core 19 are connected to the rotating shaft 17.
The tapered surface can be formed with high accuracy.
この発明によればブレーキ付き電動機において、固定子
鉄心で包囲した回転磁極鉄心と制動ばねで付勢して制動
作用を行う可動鉄心との対向面を固定子鉄心側に向くテ
ーパ状に形成して可動鉄心の外周端部が磁路の一部を構
成するようにしたので、固定子鉄心の励磁に伴い可動鉄
心に作用してブレーキを釈放する電磁吸引力が大きくな
り、これにより制動ばねのばね力を大きくして制動トル
クを増すことができるという効果が得られる。According to this invention, in an electric motor with a brake, opposing surfaces of a rotating magnetic pole core surrounded by a stator core and a movable core that is biased by a braking spring to perform a braking action are formed in a tapered shape facing toward the stator core. Since the outer peripheral end of the movable core forms part of the magnetic path, as the stator core is energized, the electromagnetic attractive force that acts on the movable core to release the brake increases, which causes the braking spring to release the brake. The effect is that the braking torque can be increased by increasing the force.
第１図はこの発明の実施例の制動状態を示す一部縦断面
図、第２図は第１図のブレーキ釈放状態を示す一部縦断
面図、第３図は従来例の縦断面図である。
１・・・回転子、１２・・・可動鉄心、１４・・・制動
ばね、ｌ５・・・画定部、ｌ６・・・固定鉄心、１７・
・・回転軸、８・・・制動板、
９・・・磁極鉄心。
第
図
第
図FIG. 1 is a partial vertical cross-sectional view showing the braking state of the embodiment of the present invention, FIG. 2 is a partial vertical cross-sectional view showing the brake release state of FIG. 1, and FIG. 3 is a vertical cross-sectional view of the conventional example. be. DESCRIPTION OF SYMBOLS 1... Rotor, 12... Movable iron core, 14... Braking spring, l5... Defining part, l6... Fixed iron core, 17...
... Rotating shaft, 8... Brake plate, 9... Magnetic pole iron core. Figure Figure
Claims (1)
および円板状の磁極鉄心と、これらを嵌着した回転軸の
前記磁極鉄心の反回転子側に軸方向に移動可能にはめ込
んだ可動鉄心と、この可動鉄心の反磁極鉄心側端面およ
び要すればこれと軸方向に対向する固定部に固着した制
動板と、回転制動板を固定部に押しつけて制動作用を行
う制動ばねとを備え、前記可動鉄心と磁極鉄心の対向面
を固定子鉄心側に向くテーパ状に形成し、固定子鉄心を
励磁することにより可動鉄心を前記制動ばねに抗し吸引
してブレーキを釈放するようにしたことを特徴とするブ
レーキ付き電動機。1) A cylindrical rotor and a disc-shaped magnetic pole core that are commonly surrounded by a cylindrical stator core, and a rotating shaft fitted with these can be moved in the axial direction toward the side opposite to the rotor of the magnetic pole core. The fitted movable core, the end face of the movable core on the antimagnetic pole core side, and if necessary, a brake plate fixed to a fixed part axially opposed to this, and a brake spring that presses the rotary brake plate against the fixed part to perform a braking action. The facing surfaces of the movable core and the magnetic pole core are formed into a tapered shape facing toward the stator core, and the movable core is attracted against the brake spring by exciting the stator core to release the brake. An electric motor with a brake characterized by the following features:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11480489A JPH02294245A (en) | 1989-05-08 | 1989-05-08 | Motor with brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11480489A JPH02294245A (en) | 1989-05-08 | 1989-05-08 | Motor with brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02294245A true JPH02294245A (en) | 1990-12-05 |
Family
ID=14647109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11480489A Pending JPH02294245A (en) | 1989-05-08 | 1989-05-08 | Motor with brake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02294245A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1434332A2 (en) * | 2002-12-24 | 2004-06-30 | Positec Power Tools (Suzhou) Co., Ltd. | Motor with brake |
| US20110150458A1 (en) * | 2008-10-06 | 2011-06-23 | Seiko Precision Inc. | Drive mechanism, blade drive mechanism and optical device |
| JP2014030335A (en) * | 2012-07-06 | 2014-02-13 | Mitsubishi Electric Corp | Rotary electric machine with brake |
-
1989
- 1989-05-08 JP JP11480489A patent/JPH02294245A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1434332A2 (en) * | 2002-12-24 | 2004-06-30 | Positec Power Tools (Suzhou) Co., Ltd. | Motor with brake |
| EP1434332A3 (en) * | 2002-12-24 | 2004-11-24 | Positec Power Tools (Suzhou) Co., Ltd. | Motor with brake |
| US20110150458A1 (en) * | 2008-10-06 | 2011-06-23 | Seiko Precision Inc. | Drive mechanism, blade drive mechanism and optical device |
| US8419298B2 (en) * | 2008-10-06 | 2013-04-16 | Seiko Precision Inc. | Drive mechanism, blade drive mechanism and optical device |
| JP2014030335A (en) * | 2012-07-06 | 2014-02-13 | Mitsubishi Electric Corp | Rotary electric machine with brake |
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