JPH08159186A - Multiple disk electromagnetic brake - Google Patents
Multiple disk electromagnetic brakeInfo
- Publication number
- JPH08159186A JPH08159186A JP6330621A JP33062194A JPH08159186A JP H08159186 A JPH08159186 A JP H08159186A JP 6330621 A JP6330621 A JP 6330621A JP 33062194 A JP33062194 A JP 33062194A JP H08159186 A JPH08159186 A JP H08159186A
- Authority
- JP
- Japan
- Prior art keywords
- field core
- hub
- rotor
- plate
- armature
- 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
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、複数枚の内板と外板
を交互に積み重ねた構造を有する多板電磁ブレーキに関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-plate electromagnetic brake having a structure in which a plurality of inner plates and outer plates are alternately stacked.
【０００２】[0002]
【従来の技術】従来の多板電磁ブレーキは、例えば実公
昭４５−２９６３号公報で説明されているように、電磁
コイルが内設されたフィールドコアの外周面に案内部材
を軸線方向に突設して複数枚の外板を嵌合している。ま
た、フィールドコアと同心上に配設されるハブに複数枚
の内板とアーマチュアをスプライン嵌合して、複数枚の
内板と外板を交互に積み重ねた構造に組み合わせてい
る。そして、電磁コイルに通電した励磁状態では、アー
マチュアが複数枚の内板と外板を介してフィールドコア
に磁気吸着されるので、ハブの回転が制動される。ま
た、電磁コイルへの通電を断った無励磁状態では、解放
用の弾性部材により複数枚の内板と外板とが解放され、
かつアーマチュアがフィールドコアから離間されるの
で、ハブの制動は解放されて回転自在となる。2. Description of the Related Art In a conventional multi-plate electromagnetic brake, as described in, for example, Japanese Utility Model Publication No. 45-2963, a guide member is axially projected on the outer peripheral surface of a field core in which an electromagnetic coil is installed. Then, a plurality of outer plates are fitted. Further, a plurality of inner plates and an armature are spline-fitted to a hub arranged concentrically with the field core, and combined with a structure in which a plurality of inner plates and outer plates are alternately stacked. Then, when the electromagnetic coil is energized, the armature is magnetically attracted to the field core through the plurality of inner plates and outer plates, so that rotation of the hub is braked. Further, in the non-excited state in which the power supply to the electromagnetic coil is cut off, the elastic member for release releases the plurality of inner plates and outer plates,
And, since the armature is separated from the field core, the braking of the hub is released and the hub is rotatable.
【０００３】[0003]
【発明が解決しようとする課題】従来の多板電磁ブレー
キでは、励磁状態の磁束が、フィールドコアから内板と
外板を通りアーマチュアに迂回され内板と外板を通りフ
ィールドコアに戻る磁気回路を形成するので、アーマチ
ュアがフィールドコアに磁気吸着されると、磁気回路は
構造上の空隙がない閉磁路となってしまう。したがっ
て、無励磁状態に切り換えた際の残留磁束による内板と
外板の解放速度は遅くなり、空転トルクによる発熱の問
題や内・外板の摩耗の問題が生じる。またこれら問題を
解決するために、円錐形状のコイルばねを解放用の弾性
部材として設けると、装置が大形化となり多板電磁ブレ
ーキの小径化および低廉化を達成することが困難であっ
た。この発明は、内板と外板の解放速度が早い小径な多
板電磁ブレーキを安価に提供することを目的とする。In the conventional multi-plate electromagnetic brake, a magnetic circuit in which an excited magnetic flux is diverted from the field core to the armature by passing through the inner plate and the outer plate and returning to the field core through the inner plate and the outer plate. Therefore, when the armature is magnetically attracted to the field core, the magnetic circuit becomes a closed magnetic circuit without a structural void. Therefore, the release speed of the inner plate and the outer plate due to the residual magnetic flux at the time of switching to the non-excited state becomes slow, and the problem of heat generation due to the idling torque and the problem of wear of the inner and outer plates occur. Further, in order to solve these problems, if a conical coil spring is provided as an elastic member for releasing, the device becomes large in size, and it is difficult to reduce the diameter and cost of the multi-plate electromagnetic brake. An object of the present invention is to provide a small-diameter multi-plate electromagnetic brake that releases the inner plate and the outer plate at high speed at low cost.
【０００４】[0004]
【課題を解決するための手段】このような目的を達成す
るために、この発明の多板電磁ブレーキでは、断面コ字
状の環状部材からなり外極端面を内極端面より軸線方向
に突設したフィールドコアと、このフィールドコアの環
状溝に内設された電磁コイルと、前記フィールドコアの
内極部の内側に所定の空隙を介して挿入される円筒部
と、この円筒部の端面から前記フィールドコアの外極部
端面の内側に向かって半径方向外側に延設されるととも
に前記フィールドコアの外極部の内側に所定の空隙を介
して挿入される円板部とからなり、断磁部で半径方向に
磁気的に分離された前記円板部の内側の側面が前記フィ
ールドコアの内極部端面と前記空隙より大きな空隙を介
して対向するロータと、このロータの円筒部内側に一体
に嵌合される円筒部と前記ロータの円筒部開口端面が突
き当てられるスプライン歯部とが形成された非磁性材製
のハブと、前記フィールドコアの外極部端面から更に軸
線方向に突設され前記ハブのスプライン歯部と同心上に
配設される前記フィールドコアの案内部と、このフィー
ルドコアの案内部または前記ハブのスプライン歯部に嵌
合され交互に積み重ねられるとともに断磁部で半径方向
に磁気的に分離された複数枚の内板と外板と、前記ハブ
のスプライン歯部に嵌合され前記内板と外板を介して前
記ロータの円板部と対向するアーマチュアとを備えたこ
とを特徴とする。In order to achieve such an object, in the multi-plate electromagnetic brake of the present invention, the outer extreme surface is made of an annular member having a U-shaped cross section, and the outer extreme surface is projected in the axial direction from the inner extreme surface. The field core, the electromagnetic coil provided in the annular groove of the field core, the cylindrical portion inserted inside the inner pole portion of the field core through a predetermined gap, and the end face of the cylindrical portion A magnetic field demagnetizing portion, which is formed by a disk portion that extends radially outward toward the inside of the outer pole portion end surface of the field core and is inserted inside the outer pole portion of the field core through a predetermined gap. And a rotor whose inner side surface magnetically separated in the radial direction opposes the inner pole portion end surface of the field core via a gap larger than the gap, and is integrally formed inside the rotor cylindrical portion. Cylindrical part to be fitted A hub made of a non-magnetic material in which a spline tooth portion against which the cylindrical opening end face of the rotor is abutted is formed, and a spline tooth portion of the hub that is further provided in the axial direction to project from the outer pole end face of the field core. The guide portion of the field core arranged concentrically and the guide portion of the field core or the spline tooth portion of the hub are fitted and alternately stacked, and magnetically separated in the radial direction at the demagnetization portion. A plurality of inner plates and an outer plate, and an armature fitted to the spline tooth portion of the hub and facing the disc portion of the rotor via the inner plate and the outer plate are provided.
【０００５】またこの発明の多板電磁ブレーキでは、前
記外板の内側となる前記ハブのスプライン歯部上に、前
記内板と外板とを離間する解放用の弾性部材を個々に配
設したことを特徴とする。Further, in the multi-plate electromagnetic brake of the present invention, elastic members for release which separate the inner plate and the outer plate from each other are individually arranged on the spline teeth of the hub which are inside the outer plate. It is characterized by
【０００６】また更に、この発明の多板電磁ブレーキで
は、前記フィールドコアの案内部の最先端面と前記アー
マチュアの前記ロータ側側面とが無励磁状態において略
同一平面上になるように、前記アーマチュアを前記ハブ
のスプライン歯部に抜け止めしたことを特徴とする。Furthermore, in the multi-plate electromagnetic brake of the present invention, the armature is arranged so that the most distal surface of the guide portion of the field core and the rotor side surface of the armature are substantially flush with each other in a non-excited state. Is secured to the spline tooth portion of the hub.
【０００７】[0007]
【作用】多板電磁ブレーキは、電磁コイルに通電した励
磁状態では、複数枚の内板と外板を介してアーマチュア
がロータに磁気吸着される。またこの励磁状態における
磁束の磁気回路は、フィールドコアの外極部から所定の
空隙を介してロータに迂回され、このロータから内板と
外板を通りアーマチュアを経由してから内板と外板を通
りロータに帰り、更にロータから所定の空隙を介してフ
ィールドコアの内極部に戻る回路を形成するので、フィ
ールドコアとロータとの間に構造上の２つの空隙が残存
する。したがって、電磁コイルへの通電を断った際に
は、前記２つの空隙が残留磁束の磁気抵抗となってその
残留磁束の消滅が早く、内板と外板の解放が迅速となる
ので、空転トルクによる発熱の問題や内・外板の摩耗の
問題が解決される。In the multi-plate electromagnetic brake, the armature is magnetically attracted to the rotor via the plurality of inner plates and outer plates when the electromagnetic coil is energized. Also, the magnetic circuit of the magnetic flux in this excited state is diverted from the outer pole portion of the field core to the rotor through a predetermined air gap, from this rotor through the inner plate and outer plate, and through the armature, and then the inner plate and outer plate. Since a circuit is formed which returns to the rotor through the path and returns from the rotor to the inner pole portion of the field core through a predetermined air gap, two structural air gaps remain between the field core and the rotor. Therefore, when the energization of the electromagnetic coil is cut off, the two air gaps serve as a magnetic resistance of the residual magnetic flux, the residual magnetic flux disappears quickly, and the inner plate and the outer plate are released quickly. The problem of heat generation and the problem of wear of inner and outer plates due to is solved.
【０００８】また、解放用の弾性部材を外板の内側とな
るハブのスプライン歯部上に個々に配設したので、内板
と外板の解放はより迅速となる。Further, since the elastic members for releasing are individually arranged on the spline teeth of the hub inside the outer plate, the inner plate and the outer plate can be released more quickly.
【０００９】また、フィールドコアの案内部の最先端面
とアーマチュアのロータ側側面とが無励磁状態において
略同一平面上になるように、アーマチュアをハブのスプ
ライン歯部に抜け止めしたので、電磁コイルの磁束がフ
ィールドコアからその案内部を通りアーマチュアに迂回
されるような漏洩磁気回路は形成されることはなく、電
磁コイルの磁束を有効に使える。Further, since the armature is prevented from coming off from the spline tooth portion of the hub so that the most distal end surface of the guide portion of the field core and the rotor side surface of the armature are substantially flush with each other in a non-excited state, the electromagnetic coil is prevented. The magnetic flux of the electromagnetic coil is effectively used without forming a leaky magnetic circuit in which the magnetic flux of is bypassed from the field core to the armature through the guide portion.
【００１０】[0010]
【実施例】図１と図２はこの発明の多板電磁ブレーキの
一実施例であり、図１は上半分を断面とした側面図、図
２は図１の要部のみを示した拡大断面図である。以下、
これら図面に基づき実施例を詳細に説明する。多板電磁
ブレーキ１は、被制動機械２のケーシングにねじ止め固
定されたフィールドコア３を有する。このフィールドコ
ア３は、電磁コイル４が内設された環状溝３ａと、この
環状溝３ａを囲繞する円筒状の内極部３ｂと同円筒状の
外極部３ｃが形成されており、また、内極部３ｂの端面
より軸線方向に突設した外極部３ｃの端面には、この端
面より更に軸線方向へ突設されるとともに円周方向に間
隔をおいて複数個の案内部３ｄが一体に形成されてい
る。なお、この案内部３ｄを非磁性材料で形成して、フ
ィールドコア３の外極部３ｃに固着する場合もある。1 and 2 show an embodiment of a multi-plate electromagnetic brake according to the present invention. FIG. 1 is a side view showing the upper half as a section, and FIG. 2 is an enlarged sectional view showing only the main part of FIG. It is a figure. Less than,
Embodiments will be described in detail with reference to these drawings. The multi-plate electromagnetic brake 1 has a field core 3 screwed and fixed to a casing of the braked machine 2. The field core 3 is formed with an annular groove 3a in which the electromagnetic coil 4 is installed, a cylindrical inner pole portion 3b surrounding the annular groove 3a, and an outer pole portion 3c having the same cylindrical shape. A plurality of guide portions 3d are integrally formed on the end surface of the outer pole portion 3c projecting from the end surface of the inner pole portion 3b in the axial direction so as to project further in the axial direction from this end surface and at intervals in the circumferential direction. Is formed in. The guide portion 3d may be formed of a non-magnetic material and fixed to the outer pole portion 3c of the field core 3.
【００１１】また、被制動機械２の回転軸２ａには、こ
の回転軸２ａの段差部に端面が当接するまでキー嵌合さ
れ抜け止め手段としてのスナップリング５で抜け止めさ
れた非磁性材製のハブ６が装着されている。このハブ６
は、外周面が段付き状に形成され、前記スナップリング
５で抜け止めされる側にはスプライン歯部６ａが形成さ
れている。またこのハブ６には、スプライン歯部６ａに
半径方向内側の側面が当接するまで嵌合されたロータ７
が焼嵌め固着または圧入固着されている。なお、符号８
は、ロータ７の抜け止め用に設けたスナップリングであ
るが、非常に大きな制動力が必要とされる多板電磁ブレ
ーキでなければ特別に設けなくてもよい。Further, the rotating shaft 2a of the braked machine 2 is made of a non-magnetic material, which is key-fitted until the step surface of the rotating shaft 2a comes into contact with the end face and is prevented from coming off by a snap ring 5 as a coming-off preventing means. Hub 6 is attached. This hub 6
Has a stepped outer peripheral surface, and a spline tooth portion 6a is formed on the side where the snap ring 5 is prevented from coming off. Further, the rotor 6 fitted to the hub 6 until the side surface on the radially inner side abuts on the spline tooth portion 6a.
Is shrink-fitted or press-fitted. Note that reference numeral 8
Is a snap ring provided to prevent the rotor 7 from coming off, but it does not have to be provided specially unless it is a multi-plate electromagnetic brake that requires a very large braking force.
【００１２】ロータ７は、フィールドコア３の環状溝３
ａの開口部側に配設されており、フィールドコア３の内
極部３ｂの内側に所定の空隙Ｓ 1を介して挿入された円
筒部７ａと、この円筒部７ａの前記スプライン歯部６ａ
側端面から半径方向外側に向かって延設され、外周面が
フィールドコア３の外極部の内側に所定の空隙Ｓ 2を介
して挿入された円板部７ｂとを有する形状である。ま
た、円板部７ｂには、この円板部７ｂを半径方向で磁気
的に分離するように円弧状の長孔７ｃが同一円周上に間
隔をおいて形成されている。なお、この長孔７ｃは磁束
迂回用の断磁部であり、非磁性材料からなる断磁部材で
円板部７ｂを完全に磁気的に分離した構造としてもよ
い。また、前記空隙Ｓ 1・Ｓ 2の寸法は、略同一な寸法
として設定されており、フィールドコア３の内極部３ｂ
の端面とロータ７の円板部７ｂとの間に形成される空隙
Ｓ3は、前記空隙Ｓ 1・Ｓ 2より大きな寸法として設定
されている。The rotor 7 has an annular groove 3 in the field core 3.
is disposed on the opening side of the a, a cylindrical portion 7a which is inserted through a predetermined gap S 1 on the inner side of the inner pole portion 3b of the field core 3, the spline teeth 6a of the cylindrical portion 7a
Extending radially outwardly from the side end face, the outer peripheral surface has a shape having a disc portion 7b on the inner side of the outer pole portion is inserted through a predetermined gap S 2 of the field core 3. Further, in the disc portion 7b, arcuate elongated holes 7c are formed at intervals on the same circumference so as to magnetically separate the disc portion 7b in the radial direction. The elongated hole 7c is a demagnetizing portion for bypassing the magnetic flux, and may have a structure in which the disc portion 7b is completely magnetically separated by a demagnetizing member made of a nonmagnetic material. The dimensions of the spaces S 1 and S 2 are set to be substantially the same, and the inner pole portion 3 b of the field core 3 is set.
The space S 3 formed between the end face of the disk and the disk portion 7b of the rotor 7 is set to have a size larger than the space S 1 · S 2 .
【００１３】ハブ６のスプライン歯部６ａには、複数枚
の内板９とアーマチュア１０がスプライン嵌合されスナ
ップリング１１で抜け止めされている。各内板９は、ロ
ータ７の長孔７ｃと同様に断磁部としての長孔９ａが形
成され、半径方向で磁気的に分離された構造となってい
る。またこれら内板９の間には、断磁部としての長孔１
２ａが形成された外板１２が個々に配設され、フィール
ドコア３の案内部３ｄと噛合って係合されている。また
更には、これら外板１２の内側となるハブ６のスプライ
ン歯部６ａ上には、内板９と外板１２を解放状態とする
とともに、アーマチュア１０をロータ７から離間する弾
性部材としての波付き環状ばね１３が嵌合されている。
なお、この波付き環状ばね１３の厚みは外板１２の厚み
より薄くなっている。また波付き環状ばね１３の弾性復
帰力により、アーマチュア１０がロータ７から離間され
てスナップリング１１で抜け止めされているとき、アー
マチュア１０のロータ７側側面とフィールドコア３の案
内部３ｄの最先端面とは同一平面上になる構造となって
いる。A plurality of inner plates 9 and an armature 10 are spline-fitted to the spline teeth 6a of the hub 6 and are retained by a snap ring 11. Each inner plate 9 is formed with a long hole 9a as a demagnetization portion similarly to the long hole 7c of the rotor 7, and has a structure that is magnetically separated in the radial direction. In addition, between these inner plates 9, a long hole 1 as a demagnetization portion is provided.
The outer plates 12 on which 2a are formed are individually arranged, and mesh with and engage with the guide portions 3d of the field core 3. Furthermore, on the spline tooth portion 6a of the hub 6 which is the inside of the outer plate 12, the inner plate 9 and the outer plate 12 are released, and the armature 10 serves as an elastic member that separates the armature 10 from the rotor 7. The attached annular spring 13 is fitted.
The corrugated annular spring 13 is thinner than the outer plate 12. Further, when the armature 10 is separated from the rotor 7 and is prevented from coming off by the snap ring 11 due to the elastic return force of the corrugated annular spring 13, the rotor 7 side surface of the armature 10 and the leading end of the guide portion 3d of the field core 3 are separated. The structure is flush with the surface.
【００１４】以上のような構造とした多板電磁ブレーキ
１は、電磁コイル４へ通電した励磁状態における磁束Φ
が、フィールドコア３の外極部３ｃから空隙Ｓ 2を通り
ロータ７の半径方向外側の円板部７ｂに流れ、内板９と
外板１２を通りアーマチュア１０を経由してからロータ
７の半径方向内側の円板部７ｂに流れる。そして磁束Φ
は、ロータ７の円筒部７ａから空隙Ｓ1 を通りフィール
ドコア３の内極部３ｂに戻る磁気回路となる。したがっ
て、電磁コイル４に通電すれば、アーマチュア１０は内
板９と外板１２とともに環状ばね１３のばね力に抗して
ロータ７に磁気吸着するので、これら内外板９・１２と
アーマチュア１０を介してハブ６とフィールドコア３は
一体化され、回転軸２ａは制動される。また電磁コイル
４への通電を断って無励磁状態にすれば、電磁コイル４
の磁束Φは消滅するので、環状ばね１３のばね力により
内板９と外板１２は離間され解放されるとともに、アー
マチュア１０はロータ７から離間されスナップリング１
１まで後退する。したがって、ハブ６の制動は解放され
て回転軸２ａは回転自在となる。The multi-plate electromagnetic brake 1 having the above structure has the magnetic flux Φ in the excited state in which the electromagnetic coil 4 is energized.
Flows from the outer pole portion 3c of the field core 3 to the disk portion 7b on the radially outer side of the rotor 7 through the air gap S 2 , passes through the inner plate 9 and the outer plate 12 through the armature 10, and then reaches the radius of the rotor 7. It flows to the disk portion 7b on the inner side in the direction. And magnetic flux Φ
Is a magnetic circuit that returns from the cylindrical portion 7a of the rotor 7 to the inner pole portion 3b of the field core 3 through the air gap S 1 . Therefore, when the electromagnetic coil 4 is energized, the armature 10 is magnetically attracted to the rotor 7 together with the inner plate 9 and the outer plate 12 against the spring force of the annular spring 13, so that the inner and outer plates 9 and 12 and the armature 10 are interposed. The hub 6 and the field core 3 are integrated, and the rotating shaft 2a is braked. If the electromagnetic coil 4 is de-energized to be in a non-excited state, the electromagnetic coil 4
Since the magnetic flux Φ disappears, the inner plate 9 and the outer plate 12 are separated and released by the spring force of the annular spring 13, and the armature 10 is separated from the rotor 7 and the snap ring 1 is released.
Retreat to 1. Therefore, the braking of the hub 6 is released and the rotating shaft 2a becomes rotatable.
【００１５】なおこの実施例における多板電磁ブレーキ
１は、無励磁状態におけるアーマチュア１０のロータ側
側面がフィールドコア３の案内部３ｄの最先端面と同一
平面上となる構造としたので、その案内部３ｄからアー
マチュア１０の外側へ向かって磁束Φ（漏洩磁束）が流
れにくくなっており、電磁コイル４へ通電することによ
り発生する磁束Φを有効に使うことができる。In the multi-plate electromagnetic brake 1 of this embodiment, the rotor side surface of the armature 10 in the non-excited state is flush with the tip end surface of the guide portion 3d of the field core 3. The magnetic flux Φ (leakage magnetic flux) is less likely to flow from the portion 3d to the outside of the armature 10, and the magnetic flux Φ generated by energizing the electromagnetic coil 4 can be effectively used.
【００１６】[0016]
【発明の効果】以上のように、この発明の多板電磁ブレ
ーキでは、励磁状態において磁気回路上には構造上の２
つの空隙が形成され、これら空隙が無励磁状態にした際
の残留磁束の磁気抵抗となるので、その残留磁束の消滅
が早く内板と外板の解放が迅速となり、空転トルクによ
る発熱の問題や内・外板の摩耗の問題が解決されるとと
もに、小径な多板電磁ブレーキを安価に提供することが
できる。As described above, in the multi-plate electromagnetic brake of the present invention, there is a structural difference in the magnetic circuit in the excited state.
Since two air gaps are formed and these air gaps become the magnetic resistance of the residual magnetic flux when they are in the non-excited state, the residual magnetic flux disappears quickly and the inner and outer plates are released quickly. It is possible to solve the problem of wear of the inner and outer plates and provide a small-diameter multi-plate electromagnetic brake at low cost.
【００１７】また、内板と外板を解放する弾性部材を特
別なばね特性が得られる形状にする必要がなく、形状を
簡素化することができるので、小径な多板電磁ブレーキ
が安価に提供できる。Further, since it is not necessary to form the elastic member for releasing the inner plate and the outer plate into a shape capable of obtaining a special spring characteristic and the shape can be simplified, a small-diameter multi-plate electromagnetic brake can be provided at a low cost. it can.
【００１８】また、フィールドコアの案内部の最先端面
とアーマチュアのロータ側側面とが、無励磁状態におい
て略同一平面上になるようにしたので、フィールドコア
の案内部からアーマチュアの外周面に向かって磁束が流
れにくくなり、磁束を有効に使うことができる。Further, since the most distal surface of the guide portion of the field core and the side surface of the armature on the rotor side are substantially flush with each other in a non-excited state, the guide portion of the field core faces the outer peripheral surface of the armature. The magnetic flux does not flow easily, and the magnetic flux can be used effectively.
【００１９】[0019]
【図１】この発明の多板電磁ブレーキの一実施例であ
り、上半分を断面とした側面図である。FIG. 1 is a side view showing an embodiment of a multi-plate electromagnetic brake of the present invention, the upper half of which is a cross section.
【図２】図１の要部のみを示した拡大断面図である。FIG. 2 is an enlarged cross-sectional view showing only a main part of FIG.
３…フィールドコア、４…電磁コイル、６…ハブ、７…
ロータ、９…内板、１０…アーマチュア、１２…外板、
１３…環状ばね。3 ... field core, 4 ... electromagnetic coil, 6 ... hub, 7 ...
Rotor, 9 ... inner plate, 10 ... armature, 12 ... outer plate,
13 ... Annular spring.
Claims (3)
内極端面より軸線方向に突設したフィールドコアと、こ
のフィールドコアの環状溝に内設された電磁コイルと、
前記フィールドコアの内極部の内側に所定の空隙を介し
て挿入される円筒部と、この円筒部の端面から前記フィ
ールドコアの外極部端面の内側に向かって半径方向外側
に延設されるとともに前記フィールドコアの外極部の内
側に所定の空隙を介して挿入される円板部とからなり、
断磁部で半径方向に磁気的に分離された前記円板部の内
側の側面が前記フィールドコアの内極部端面と前記空隙
より大きな空隙を介して対向するロータと、このロータ
の円筒部内側に一体に嵌合される円筒部と前記ロータの
円筒部開口端面が突き当てられるスプライン歯部とが形
成された非磁性材製のハブと、前記フィールドコアの外
極部端面から更に軸線方向に突設され前記ハブのスプラ
イン歯部と同心上に配設される前記フィールドコアの案
内部と、このフィールドコアの案内部または前記ハブの
スプライン歯部に嵌合され交互に積み重ねられるととも
に断磁部で半径方向に磁気的に分離された複数枚の内板
と外板と、前記ハブのスプライン歯部に嵌合され前記内
板と外板を介して前記ロータの円板部と対向するアーマ
チュアとを備えたことを特徴とする多板電磁ブレーキ。1. A field core comprising an annular member having a U-shaped cross section and having an outer extreme surface projecting axially from the inner extreme surface, and an electromagnetic coil provided in an annular groove of the field core.
A cylindrical portion that is inserted inside the inner pole portion of the field core through a predetermined gap, and extends radially outward from the end surface of the cylindrical portion toward the inside of the outer pole portion end surface of the field core. Along with a disk portion inserted through a predetermined gap inside the outer pole portion of the field core,
A rotor in which the inner side surface of the disk portion, which is magnetically separated in the radial direction at the demagnetization portion, faces the inner pole end surface of the field core with a gap larger than the gap, and the inside of the cylindrical portion of the rotor. A hub made of a non-magnetic material in which a cylindrical portion integrally fitted with the rotor and a spline tooth portion against which the opening end surface of the cylindrical portion of the rotor abuts are formed, and in the axial direction further from the end surface of the outer pole portion of the field core. A guide portion of the field core which is provided so as to project and is arranged concentrically with the spline tooth portion of the hub, and a demagnetizing portion which is fitted to the guide portion of the field core or the spline tooth portion of the hub and alternately stacked. A plurality of inner plates and outer plates that are magnetically separated in the radial direction by the armature, and an armature that is fitted to the spline tooth portion of the hub and that faces the disc portion of the rotor via the inner plate and the outer plate. Equipped with Multi-disc electromagnetic brake, characterized and.
ン歯部上に、前記内板と外板とを離間する解放用の弾性
部材を個々に配設したことを特徴とする請求項１記載の
多板電磁ブレーキ。2. A release elastic member for individually separating the inner plate and the outer plate is individually arranged on a spline tooth portion of the hub which is an inner side of the outer plate. The described multi-disc electromagnetic brake.
前記アーマチュアの前記ロータ側側面とが無励磁状態に
おいて略同一平面上になるように、前記アーマチュアを
前記ハブのスプライン歯部に抜け止めしたことを特徴と
する請求項２記載の多板電磁ブレーキ。3. The armature is prevented from coming off from the spline tooth portion of the hub so that the most distal end surface of the guide portion of the field core and the rotor side surface of the armature are substantially flush with each other in a non-excited state. The multi-plate electromagnetic brake according to claim 2, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33062194A JP3190222B2 (en) | 1994-12-07 | 1994-12-07 | Multi-plate electromagnetic brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33062194A JP3190222B2 (en) | 1994-12-07 | 1994-12-07 | Multi-plate electromagnetic brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08159186A true JPH08159186A (en) | 1996-06-18 |
| JP3190222B2 JP3190222B2 (en) | 2001-07-23 |
Family
ID=18234714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33062194A Expired - Fee Related JP3190222B2 (en) | 1994-12-07 | 1994-12-07 | Multi-plate electromagnetic brake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3190222B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173403A (en) * | 1984-02-10 | 1985-09-06 | Nippon Telegr & Teleph Corp <Ntt> | Correspondence processing method of stereophonic image |
| KR20000062202A (en) * | 1998-12-18 | 2000-10-25 | 클라우스 포스, 게오르그 뮐러 | Electromagnetic disc brake |
| WO2024063375A1 (en) * | 2022-09-22 | 2024-03-28 | 주식회사 유니크 | Electronic brake device |
-
1994
- 1994-12-07 JP JP33062194A patent/JP3190222B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173403A (en) * | 1984-02-10 | 1985-09-06 | Nippon Telegr & Teleph Corp <Ntt> | Correspondence processing method of stereophonic image |
| JPH047805B2 (en) * | 1984-02-10 | 1992-02-13 | Nippon Telegraph & Telephone | |
| KR20000062202A (en) * | 1998-12-18 | 2000-10-25 | 클라우스 포스, 게오르그 뮐러 | Electromagnetic disc brake |
| WO2024063375A1 (en) * | 2022-09-22 | 2024-03-28 | 주식회사 유니크 | Electronic brake device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3190222B2 (en) | 2001-07-23 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |