DE2517718A1 - Coil for electro magnetic brake - has cap in mounting so that coil thermal expansion does not affect air gap - Google Patents

Coil for electro magnetic brake - has cap in mounting so that coil thermal expansion does not affect air gap

Info

Publication number
DE2517718A1
DE2517718A1 DE19752517718 DE2517718A DE2517718A1 DE 2517718 A1 DE2517718 A1 DE 2517718A1 DE 19752517718 DE19752517718 DE 19752517718 DE 2517718 A DE2517718 A DE 2517718A DE 2517718 A1 DE2517718 A1 DE 2517718A1
Authority
DE
Germany
Prior art keywords
coil
air gap
brake
mounting
friction lining
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
Application number
DE19752517718
Other languages
German (de)
Inventor
Karl-Heinz Ing Grad Paoee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LENZE KG MASCHF HANS
Original Assignee
LENZE KG MASCHF HANS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LENZE KG MASCHF HANS filed Critical LENZE KG MASCHF HANS
Priority to DE19752517718 priority Critical patent/DE2517718A1/en
Publication of DE2517718A1 publication Critical patent/DE2517718A1/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D27/00Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/02Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings
    • F16D27/04Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings with axially-movable friction surfaces
    • F16D27/08Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings with axially-movable friction surfaces with friction surfaces arranged externally to the flux
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00Type of actuator operation force
    • F16D2121/18Electric or magnetic
    • F16D2121/20Electric or magnetic using electromagnets

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Braking Arrangements (AREA)

Abstract

The brake housing (1) is provided with a recess (2) into which the coil (3) and spool n4) are fitted. A channel section ring (6) is fitted over the coil (3) into a slightly wider recess (5), and abuts against the shoulder at the bottom of the recess (5) to leave a gap (7) between the inner face of the channel section and the end face of the spool (4). The outer face of the channel section (6) carries the brake lining (8) which is secured by adhesive. When the coil (3) is energised, the expansion due to the rise in temp can be accommodated by the gap (7) without affecting the air gap between the housing (1) and brake disc (9).

Description

Vorrichtung zur Montage und Befestigung des tingförmigen Reibbelages im Magnet körp er einer Elektromagnet-Kupplung oder -Bremse.Device for mounting and securing the ting-shaped friction lining in the magnet it is the body of an electromagnetic clutch or brake.

Bei Elektromagnet-Kupplungen und -Bremsen mit ringförmigem Magnetkörper, ringförmiger Erregerspule und ringförmigem Reibbelag ist es bekannt, die Erregerspule voll mit Gießharz zu vergießen und den Reibbelag in den Gießharz vor dessen Aushärtung einzudrücken und so den Reibbelag fest mit dem die Erregerspule umgebenden Gießharz zu verbinden.For electromagnetic clutches and brakes with a ring-shaped magnet body, annular excitation coil and annular friction lining, it is known, the excitation coil to fully encapsulate with casting resin and the friction lining in the casting resin before it hardens and so the friction lining firmly with the casting resin surrounding the excitation coil connect to.

Bei der betriebsmäßigen Erwärmung infolge Erregung der Erregerspule dehnt sich das Gießharz aus und infolgedessen wird der Reibbelag aus dem Magnetkörper vorgeschoben, sodaß sich bei angezogener Ankerscheibe ein mehr oder weniger vergrößerter Luftspalt zwischen den Polflächen des Magneteisens und der Ankerscheibe einstellt. Hierdurch tritt mit steigender temperatur ein Abfall des übertragbaren Kupplungs- oder Bremsmomentes auf, da über den vergrößerten Luftspalt die auf die Ankerscheibe wirkende Anzugskraft geringer wird.During operational heating due to excitation of the excitation coil the casting resin expands and as a result the friction lining is removed from the magnet body advanced so that when the armature disk is tightened, a more or less enlarged Adjusts the air gap between the pole faces of the magnetic iron and the armature disk. As a result, as the temperature rises, there is a decrease in the transferable clutch or braking torque, because over the enlarged air gap on the armature disk acting tightening force is lower.

Um diese ungünstige Wirkung auf das Drehmomentserhalten der Kupplung oder Bremse auszuschließen, ist es benannt, den Reibbelag nicht in der vorstehend beschriebenen Weise auf die Erregerspule aufzukleben, sondern den Reibbelag nur mit seinen Innen- und Außenrändern auf die radialen Flächen einer gegenüber der die Erregerspule enthaltenisn Ringnut vergrößerten Ausdrehung des Magheteisens aufzukleben. Dieses Verfahren ist aber insofern nachteilig, als die Klebeverbindung nur auf einer verhältnismäßig kleinen Auflagefläche besteht und sich im Betrieb leicht lösen kann, Die Erfindunjg, die eine Vorichtung zur Montage und Befestigung des ringförmigen Reibbelages in dem die ringförmige Erregerspule enthaltenden Magnetkörper einer Elektromagnet-Kupplung oder -Bremse betrifft, bezweckt die Nachteile der banntern Verfahren zu vermeiden und bei sicherer Klebeverbind des Reibbelages ellen auch bei steigender Temperatur konstant bleibenden Luft spalt zwischen der Ankerscheibe und den Polflächen des Magneteisens sicherzustellen. Dies wird erfindungsgemäß mittels eines in einer Ringnut des Magnetörpers eingepreßten, durch einen Luft spalt von der Erregerspule getrennten Blechrings erreicht, auf dem der Reibbelag aufgeklebt ist.To get this adverse effect on the torque retention of the clutch or exclude brake, it is named, the friction lining not in the above the manner described on the excitation coil, but only the friction lining with its inner and outer edges on the radial surfaces of one opposite the the excitation coil contains an annular groove with an enlarged recess of the maghite iron. This method is disadvantageous in that the adhesive connection only exists on a relatively small contact surface and is in operation can easily solve the invention, which is a device for assembly and fastening of the annular friction lining in the magnetic body containing the annular excitation coil an electromagnetic clutch or brake, aims at the disadvantages of the banners Process to be avoided and also ellen with a secure adhesive connection of the friction lining The air gap between the armature disk remains constant when the temperature rises and to ensure the pole faces of the magnetic iron. According to the invention, this is achieved by means of one pressed into an annular groove of the magnet body, through an air gap of the excitation coil reached separate sheet metal ring, on which the friction lining is glued is.

Der Vorteil der Erfindung besteht darin, daß der Reibbelag durch den eingepreäten Blechring seine vollflachige und damit sichere Klebeverbindung erhält ohne daß die Erregerspule in der bisherigen kcstpieligen Weise voll mit Gießharz vergossen werden muß. Gleichzeitig ist sichergestellt, daß durch die Ausdehnung der Erregerapule die axiale Lage des Reibbelages zu den Polflächen des Magnet eisens nicht verändert wird, da zwischen Spule und Blechring ein Luftspalt vorhanden ist.The advantage of the invention is that the friction lining through the pressed-in sheet metal ring receives its full-area and therefore secure adhesive connection without the excitation coil full of cast resin in the previous kcstpieligen way must be shed. At the same time it is ensured that the expansion the exciter coil the axial position of the friction lining to the pole faces of the magnet iron is not changed because there is an air gap between the coil and the sheet metal ring.

Durch entsprechende Ausbildung des Blechrings, beispielsweise als Lochblech, lassen sich die Abschaltzeiten der Kupplung oder Bremse variieren.By appropriate training of the sheet metal ring, for example as Perforated plate, the switch-off times of the clutch or brake can be varied.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung in Anwendung auf eine Elektromagnet-Bremse dargestellt0 Die Zeichnung zeigt einen Querschnitt durch den Magnetteil der Bremse.In the drawing, an embodiment of the invention is in use shown on an electromagnetic brake0 The drawing shows a cross section through the magnetic part of the brake.

In dem ringförmigen Magnetkörper 1, der an einen feststehenden Maschinenteil anflanschbar ist, ist in einer Ringnut 2 die ringförmige Erregerspule 3 mit ihrem Spulenkörper 4 angeordnet, In einer gegenüber der Ringnut 2 vergrößerten Ausdrehung 5 des Magnetkörpers 1 ist der reibbelag 6 fest eingepreßt, und zwar derart, daß zwischen ihm und der «rregerspule 3,4 ein Abstand oder Luftspalt 7 verbleibt. Auf der der Ankerscheibe 9 zugekehrten Seite des Blechrings 6 ist der Bremsbelag 8 aufgeklebt.In the annular magnetic body 1, which is attached to a stationary machine part can be flange-mounted, the annular excitation coil 3 is in an annular groove 2 with its Coil body 4 arranged, In an enlarged compared to the annular groove 2 Recess 5 of the magnet body 1, the friction lining 6 is firmly pressed in, in such a way, that a distance or air gap 7 remains between it and the excitation coil 3, 4. The brake lining is on the side of the sheet metal ring 6 facing the armature disk 9 8 glued on.

Wie die Zeichnung erkennen läßt, bleibt die Lage des Blechring 6 und damit die des Xremabelages 8 im Magnetkörper bei Ausdehnung der Erregerspule infolge Erwärmung wegen des zwischen dem Blechring 6 und der rregerspule 3,4 vorhandenen Luftspaltes 7 unbeeinflußt, womit sichergestellt ist, daß auch der Luftspalt zwischen der durch Erregung der Erregerspule angezogenen Ankerscheibe 9 und den Solflächen des Magnet eisens 1 und damit das übertragbare Bremsmoment bei steigender Temperatur konstant bleibt.As the drawing shows, the position of the sheet metal ring 6 and remains so that of the Xremabelages 8 in the magnet body as a result of the expansion of the excitation coil Heating because of the existing between the sheet metal ring 6 and the exciter coil 3, 4 Air gap 7 unaffected, which ensures that the air gap between the armature disk 9 attracted by the excitation of the excitation coil and the sol surfaces of the magnet iron 1 and thus the transferable braking torque when the temperature rises remains constant.

Der Bremsbelag 8 ist auf der ganzen Fläche des Blechrings 6 verklebt und daher sicher befestigt.The brake lining 8 is glued to the entire surface of the sheet metal ring 6 and therefore securely attached.

Durch entsprechende Ausbildung des Blechrings lassen sich die Abschaltzeiten der Bremse variiern, indem der Blechring z.B. als Lochblech mit unterschiedlicher Lochung oder mit verschiedener Blechstärke ausgeführt wird oder dadurch, ein jeweils verschiedener Werkstoff für den Blechring gewählt wird, z.B. ein magnetisch weicher oder magnetisch harter oder antimagnetischer Werkstoff.The switch-off times can be reduced by appropriately designing the sheet metal ring of the brake can be varied by using the sheet metal ring e.g. as a perforated sheet with different Perforation or with different sheet thickness is carried out or thereby, one each different material is selected for the sheet metal ring, e.g. a magnetically soft one or magnetically hard or non-magnetic material.

Claims (2)

Patentansprüche:Patent claims: 1 Vorrichtung zur Montage und Befestigung des ringförmigen Reibbelages in dem die ringförmige Erregerspule enthaltenden Magnetkörper einer Elektromagnet-Kupplung oder -Bremse, gekennzeichnet durch einen in einer Ringnut (5) des Magnetkörpers (1) eingepreßten, durch einen Luftspalt (7) von der Erregerspule (3) getrennten Blechring (6), auf dem der Reibbelag (8) aufgeklebt ist.1 device for mounting and securing the ring-shaped friction lining in the magnetic body of an electromagnetic clutch containing the annular excitation coil or brake, characterized by one in an annular groove (5) of the magnet body (1) pressed in, separated from the excitation coil (3) by an air gap (7) Sheet metal ring (6) on which the friction lining (8) is glued. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Blechring (6) als Lochblech ausgebildet ist.2. Apparatus according to claim 1, characterized in that the sheet metal ring (6) is designed as a perforated plate.
DE19752517718 1975-04-22 1975-04-22 Coil for electro magnetic brake - has cap in mounting so that coil thermal expansion does not affect air gap Pending DE2517718A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752517718 DE2517718A1 (en) 1975-04-22 1975-04-22 Coil for electro magnetic brake - has cap in mounting so that coil thermal expansion does not affect air gap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752517718 DE2517718A1 (en) 1975-04-22 1975-04-22 Coil for electro magnetic brake - has cap in mounting so that coil thermal expansion does not affect air gap

Publications (1)

Publication Number Publication Date
DE2517718A1 true DE2517718A1 (en) 1976-11-04

Family

ID=5944631

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752517718 Pending DE2517718A1 (en) 1975-04-22 1975-04-22 Coil for electro magnetic brake - has cap in mounting so that coil thermal expansion does not affect air gap

Country Status (1)

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DE (1) DE2517718A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3142083C1 (en) * 1981-10-23 1983-03-10 Deutsche Automobilgesellschaft Mbh, 7000 Stuttgart Friction body for a radially acting friction system, in particular for the weight of a centrifugal clutch
DE3306312A1 (en) * 1982-02-26 1983-09-15 Mitsubishi Denki K.K., Tokyo MOVABLE CLUTCH OR BRAKE DISC FOR AN ELECTROMAGNETIC CLUTCH OR BRAKE
CN105605128A (en) * 2016-01-20 2016-05-25 江苏大学 Air gap width self-adjusting type electromagnetic braking device
CN111734761A (en) * 2020-06-10 2020-10-02 诸暨市迅捷离合器有限公司 Electromagnetic brake capable of working reliably in high-temperature environment
CN115698533A (en) * 2020-07-27 2023-02-03 株式会社台煐凡佳德 Non-contact non-load power transmission device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3142083C1 (en) * 1981-10-23 1983-03-10 Deutsche Automobilgesellschaft Mbh, 7000 Stuttgart Friction body for a radially acting friction system, in particular for the weight of a centrifugal clutch
FR2515294A1 (en) * 1981-10-23 1983-04-29 Deutsche Automobilgesellsch FRICTION BODY FOR A RADIALLY ACTIVATING FRICTION SYSTEM, IN PARTICULAR FOR THE CENTRIFUGAL MASSELOTTE OF A CENTRIFUGAL CLUTCH
DE3306312A1 (en) * 1982-02-26 1983-09-15 Mitsubishi Denki K.K., Tokyo MOVABLE CLUTCH OR BRAKE DISC FOR AN ELECTROMAGNETIC CLUTCH OR BRAKE
DE3306312C2 (en) * 1982-02-26 1985-11-07 Mitsubishi Denki K.K., Tokio/Tokyo MOVABLE CLUTCH OR BRAKE DISC FOR AN ELECTROMAGNETIC CLUTCH OR BRAKE
US4557360A (en) * 1982-02-26 1985-12-10 Mitsubishi Denki Kabushiki Kaisha Movable disc for electromagnetic clutch/brake
DE3306312C3 (en) * 1982-02-26 1991-11-14 Mitsubishi Electric Corp MOVABLE CLUTCH OR BRAKE DISC FOR AN ELECTROMAGNETIC CLUTCH OR BRAKE
CN105605128A (en) * 2016-01-20 2016-05-25 江苏大学 Air gap width self-adjusting type electromagnetic braking device
CN111734761A (en) * 2020-06-10 2020-10-02 诸暨市迅捷离合器有限公司 Electromagnetic brake capable of working reliably in high-temperature environment
CN115698533A (en) * 2020-07-27 2023-02-03 株式会社台煐凡佳德 Non-contact non-load power transmission device

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