DE2625990A1 - Small spring loaded brake - has electro-magnetic release with armature with spherical end to control air gap - Google Patents

Small spring loaded brake - has electro-magnetic release with armature with spherical end to control air gap

Info

Publication number
DE2625990A1
DE2625990A1 DE19762625990 DE2625990A DE2625990A1 DE 2625990 A1 DE2625990 A1 DE 2625990A1 DE 19762625990 DE19762625990 DE 19762625990 DE 2625990 A DE2625990 A DE 2625990A DE 2625990 A1 DE2625990 A1 DE 2625990A1
Authority
DE
Germany
Prior art keywords
armature
magnet housing
disk
brake
air gap
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
Application number
DE19762625990
Other languages
German (de)
Other versions
DE2625990C2 (en
Inventor
Karl-Ernst Brinkmann
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.)
BRINKMANN, KARL-ERNST, 4924 BARNTRUP, DE
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19762625990 priority Critical patent/DE2625990C2/en
Priority to DE19762660855 priority patent/DE2660855C2/en
Publication of DE2625990A1 publication Critical patent/DE2625990A1/en
Application granted granted Critical
Publication of DE2625990C2 publication Critical patent/DE2625990C2/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F16D65/84—Features relating to cooling for disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
    • F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
    • F16D55/28—Brakes with only one rotating disc
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
    • F16D59/02—Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0058—Fully lined, i.e. braking surface extending over the entire disc circumference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/20—Electric or magnetic using electromagnets
    • F16D2121/22—Electric or magnetic using electromagnets for releasing a normally applied brake

Landscapes

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

Abstract

The shaft (5) of an electric motor is provided with a disc brake actuated by the spring (9) and released by the armature (8) controlled by the electro-magnetic spool (1). The end of the armature is of spherical form (11) and matches the recess (12) on the spool housing (2). When the brake lining (6) wears during use, there is a corresponding increase in the air gap with conventional electro-magnetic brakes which reduces the magnetic force. With this design of armature and spool housing, the increase in the air gap (14) is less than the reduction in thickness of the brake lining (6) and so the necessary magnetic force is maintained despite lining wear.

Description

Elektromagnetisch lüftbare Federdruckbremse Electromagnetically released spring pressure brake

Die vorliegende Erfindung bezieht sich auf eine elektromagnetisch lüftbare Federdruckbremse, bei der zwischen einem ortsfest angebrachten Magnetgehäuse und einer auf einer Welle verdrehsicher angeordneten Bremsscheibe eine gegenüber dem Magnetgehäuse nicht verdrehbare Ankerscheibe angeordnet ist, die ständig unter der Einwirkung vorgespannter, der Zugkraft des Elektromagneten entgegenwirkender Federn steht.The present invention relates to an electromagnetic releasable spring pressure brake, with the between a fixed magnet housing and a brake disk arranged so that it cannot rotate on a shaft, one opposite the magnet housing non-rotatable armature disk is arranged, which is constantly under the action of pre-tensioned, the tensile force of the electromagnet counteracting Feathers stands.

Bei derartigen oder ähnlichen Federdruckbremsen ist der Luftspalt zwischen Magnetgehäuse und Ankerscheibe relativ klein, damit der das Lüften der Bremse bewirkende magnetische Kraftfluß erzielt werden kann. Da aber der Luftspalt bei zunehmendem Verschleiß des Bremsbelages dauernd größer wird, ist es bei bekannten Federdruckbremsen sehr häufig erforderlich, diese nachzustellen, d.h. den Luftspalt zwischen Ankerscheibe und Magnetgehäuse wieder zu verringern.With spring-applied brakes of this type or similar, the air gap is between magnet housing and armature disk relatively small, so that the ventilation of the Brake causing magnetic flux of force can be achieved. But there is the air gap with increasing wear of the brake lining is constantly larger, it is known Spring-applied brakes very often have to be readjusted, i.e. the air gap between the armature disk and the magnet housing.

Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, eine Federdruckbremse der eingangs erwähnten Art zu schaffen, bei der auch bei verhältnismäßig großem Luftspalt zwischen Ankerscheibe und Magnetgehäuse der für die sichere Lüftung erforderliche magnetische Kraftfluß gewährleistet ist.The present invention is therefore based on the object of a To create spring-loaded brake of the type mentioned, in which also with relatively large air gap between armature disk and magnet housing for safe ventilation required magnetic flux is guaranteed.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die Ankerscheibe einen kugelförmigen Ansatz aufweist, der in eine ebenfalls kugelförmige Ausnehmung des Magnetgehäuses hineinragt.This object is achieved according to the invention in that the armature disk has a spherical extension which is also in a spherical recess of the magnet housing protrudes.

Mit der Erfindung wird der Vorteil erzielt, daß ein gegenüber vorbekannten Federdruckbremsen erheblich verbesserter elektromagnetischer Kraftfluß zwischen Magnetgehäuse und Ankerscheibe gegeben ist, so daß auch bei einem relativ großen Luftspalt die zur sicheren Lüftung der Bremse erforderliche Kraft auf die Ankerscheibe ausgeübt wird.With the invention, the advantage is achieved that a compared to previously known Spring-loaded brakes significantly improved electromagnetic power flow between Magnet housing and armature disk is given, so that even with a relatively large Air gap the force on the armature disk that is required to safely release the brake is exercised.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Die Zeichnung zeigt einen Schnitt durch eine erfindungsgemäße Federdruckbremse.An embodiment of the invention is shown in the drawing and is described in more detail below. The drawing shows a section through a spring pressure brake according to the invention.

Die als Ausführungsbeispiel der Erfindung gezeigte Federdruckbremse weist ein die Elektromagnetspule 1 aufnehmendes Magnetgehäuse 2 auf, welches Magnetgehäuse 2 mittels Befestigungsschrauben 3 am Motorlagerschild 4 befestigt ist. Im Motorlagerschild 4 ist die Welle 5 gelagert. Auf der Welle 5 ist eine mit der Bremsscheibe 6 versehene Nabe 7 verdrehsicher angeordnet.The spring pressure brake shown as an embodiment of the invention has a magnet housing 2 accommodating the electromagnetic coil 1, which magnet housing 2 is fastened to the motor end shield 4 by means of fastening screws 3. In the motor end shield 4, the shaft 5 is mounted. A brake disk 6 is provided on the shaft 5 Hub 7 arranged so that it cannot rotate.

Zwischen der Bremsscheibe 6 und dem Magnetgehäuse 2 ist eine Ankerscheibe 8 angeordnet, welche Ankerscheibe 8 unter der Einwirkung einer Feder 9 steht, welche Feder 9 die Ankerscheibe 8 ständig in Richtung der Bremsscheibe 6 belastet. Die Feder 9 stützt sich einerseits an der Ankerscheibe 6 und andererseits an einem Einstellring 10 ab, welcher in das Magnetgehäuse 2 eingeschraubt ist und durch welchen Einstellring 10 eine Veränderung der Vorspannung der Federkraft möglich ist.Between the brake disk 6 and the magnet housing 2 is an armature disk 8 arranged, which armature disk 8 is under the action of a spring 9, which Spring 9 constantly loads the armature disk 8 in the direction of the brake disk 6. the Spring 9 is supported on the one hand on the armature disk 6 and on the other hand on an adjusting ring 10 from which is screwed into the magnet housing 2 and through which adjustment ring 10 a change in the preload of the spring force is possible.

Wie die Zeichnung sehr anschaulich zeigt, ist die Ankerscheibe 8 mit einem kugelförmigen Ansatz 11 versehen, welcher kugelförmige Ansatz 11 in eine ebenfalls kugelförmige Ausnehmung 12 des Magnetgehäuses 2 hineinragt. Somit tritt der Kraftfluß des Elektromagneten sowohl im Bereich der Stirnfläche der Ankerscheibe auf die dieser zugewandten Stirnfläche des Magnetgehäuses wie auch im Bereich des kugelförmigen Ansatzes 11 und der kugelförmigen Ausnehmung 12 des Magnetgehäuses 2 über. Durch den kugelförmigen Ansatz 11 wird die Ankerscheibe 8 gegenüber dem Magnetgehäuse 2 zentriert und außerdem wird das Verecken der Ankerscheibe 11 gegenüber dem Magnetgehäuse 2 verhindert.As the drawing shows very clearly, the armature disk 8 is with a spherical extension 11 is provided, which spherical extension 11 is also in a spherical recess 12 of the magnet housing 2 protrudes. Thus the power flow occurs of the electromagnet both in the area of the end face of the armature disk on this facing end face of the magnet housing as well as in the area of the spherical Approach 11 and the spherical recess 12 of the magnet housing 2 over. By the spherical projection 11 is the armature disk 8 with respect to the magnet housing 2 is centered and the armature disk 11 is also bent relative to the magnet housing 2 prevented.

Die Ankerscheibe 8 ist im Bereich ihrer der Bremsscheibe 6 zugewandten Stirnfläche mit einer Reibscheibe 13 versehen, durch welche Reibscheibe 13 das bei bislang bekannten Federdruckbremsen auftretende Quietschen während des Bremsvorganges praktisch vollständig beseitigt ist. Ein weiterer Vorteil der Reibscheibe 13 ist darin zu sehen, daß diese Reibscheibe 13 nach starkem Verschleiß leicht ausgewechselt werden kann.The armature disk 8 is facing the brake disk 6 in the area of its End face provided with a friction disc 13, through which the friction disc 13 at previously known spring pressure brakes occurring squeaking during the braking process is practically completely eliminated. Another advantage of the friction disc 13 is it can be seen that this friction disk 13 is easily replaced after heavy wear can be.

Damit es möglich ist, den Luftspalt 14 zwischen Ankerscheibe 8 und Magnetgehäuse 2 nachstellen zu können, sind im Bereich der Befestigungsschrauben 3 Einstellschrauben 15 vorgesehen, welche Einstellschrauben 15 sich einerseits am Motorlagerschild 4 abstützen und andererseits in eine Gewindebohrung 16 des Magnetgehäuses 2 eingeschraubt sind. Die Einstellschrauben 15 sind mit einer zentralen Durchgangsbohrung versehen, durch welche zentrale Durchgangsbohrung hindurch die Befestigungsschrauben 3 geführt sind. Das Nachstellen des Luftspaltes 14 ist also gegenüber bisher bekannten Konstruktionen wesentlich vereinfacht worden, da es für dieses Nachstellen lediglich erforderlich ist, zunächst die Einstellschrauben entsprechend der gewünschten Veränderung etwas tiefer in das Magnetgehäuse 2 einzuschrauben und anschließend diese Lage durch Anziehen der Befestigungsschrauben 3 zu fixieren. Selbstverständlich ist die Erfindung nicht auf das dargestellte Ausführungsbeispiel beschränkt. Insbesondere sei darauf hingewiesen, daß die Erfindung auch bei anderen ruhestrombetätigten magnetischen Geräten anwendbar ist. LeerseiteSo that it is possible, the air gap 14 between the armature disk 8 and To be able to readjust the magnet housing 2 are in the area of the fastening screws 3 adjusting screws 15 provided, which adjusting screws 15 are on the one hand Support motor end shield 4 and on the other hand in a threaded hole 16 of the magnet housing 2 are screwed in. The adjusting screws 15 have a central through hole provided through which central through-hole the fastening screws 3 are performed. The readjustment of the air gap 14 is so compared to previously known Constructions have been significantly simplified, as there is only one for this readjustment it is necessary to first adjust the adjustment screws according to the desired change screw a little deeper into the magnet housing 2 and then through this position Tighten the fastening screws 3 to fix. Of course the invention is not limited to the illustrated embodiment. In particular It should be noted that the invention also applies to other closed-circuit operated magnetic Devices is applicable. Blank page

Claims (3)

Patentansprüche Elektromagnetisch lüftbare Federdruckbremse, bei der zwischen einem ortsfest angebrachten Gehäuse und einer auf einer Welle verdrehsicher angeordneten Bremsscheibe eine gegenüber dem Magnetgehäuse nicht verdrehbare Ankerscheibe angeordnet ist, dieständig unter der Einwirkung vorgespannter, der Zugkraft des Elektromagneten entgegenwirkender Federn steht, d a d u r c h g e k e n n z e i c h n e t , daß die Ankerscheibe (8) einen kugelförmigen Ansatz (11) aufweist, der in eine ebenfalls kugelförmige Ausnehmung (12) des Magnetgehäuses (2) hineinragt. Claims Electromagnetically releasable spring pressure brake, at the one between a stationary attached housing and one on a shaft so that it cannot rotate arranged brake disk a relative to the magnet housing non-rotatable armature disk is arranged, which is constantly pretensioned under the action of the tensile force of the Electromagnets of counteracting springs are in place, that is to say c h n e t that the armature disk (8) has a spherical projection (11) which protrudes into a likewise spherical recess (12) of the magnet housing (2). 2. Federdruckbremse nach Anspruch 1, dadurch gekennzeichnet, daß die Ankerscheibe (8) auf der der Bremsscheibe (6) zugewandten Seite mit einer Reibscheibe (13) versehen ist.2. Spring-applied brake according to claim 1, characterized in that the Armature disk (8) on the side facing the brake disk (6) with a friction disk (13) is provided. 3. Federdruckbremse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die zur Festlegung des Magnetgehäuses an einem Motorlagerschild (4) vorgesehenen Befestigungsschrauben (3) durch eine zentrale Durchgangsbohrung von Einstellschrauben (15) geführt sind, welche Einstellschrauben (15) einerseits auf dem Motorlagerschild (4) abgestützt sind und andererseits in eine Gewindebohrung (16) des Magnetgehäuses (2) eingeschraubt sind.3. Spring-applied brake according to claim 1 or 2, characterized in that that provided for fixing the magnet housing on a motor end shield (4) Fixing screws (3) through a central through-hole of adjusting screws (15) are guided, which adjusting screws (15) on the one hand on the motor end shield (4) are supported and on the other hand in a threaded hole (16) of the magnet housing (2) are screwed in.
DE19762625990 1976-06-10 1976-06-10 Electromagnetically released spring pressure brake Expired DE2625990C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19762625990 DE2625990C2 (en) 1976-06-10 1976-06-10 Electromagnetically released spring pressure brake
DE19762660855 DE2660855C2 (en) 1976-06-10 1976-06-10 Adjustment device for an electromagnetically releasable spring pressure brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762625990 DE2625990C2 (en) 1976-06-10 1976-06-10 Electromagnetically released spring pressure brake

Publications (2)

Publication Number Publication Date
DE2625990A1 true DE2625990A1 (en) 1977-12-15
DE2625990C2 DE2625990C2 (en) 1984-09-06

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Family Applications (1)

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DE19762625990 Expired DE2625990C2 (en) 1976-06-10 1976-06-10 Electromagnetically released spring pressure brake

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0326966A2 (en) * 1988-01-28 1989-08-09 Christian Mayr GmbH & Co. KG Electromagnetically actuated spring brake
DE4138454C2 (en) * 1990-11-29 2002-01-03 Crown Equip Corp Three-stage electric brake
KR20170099887A (en) * 2014-12-26 2017-09-01 오리엔탈모터가부시끼가이샤 Friction brake structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB399939A (en) 1932-06-22 1933-10-19 Chance Brothers And Company Lt Improvements relating to magnetic clutches
DE1882781U (en) * 1963-09-13 1963-11-14 Zahnradfabrik Friedrichshafen ELECTROMAGNETIC RELEASE CLUTCH OR BRAKE.
CH471334A (en) 1967-04-08 1969-04-15 Zahnradfabrik Friedrichshafen Friction clutch or brake that can be released electromagnetically against spring force
DD111969A1 (en) 1974-06-24 1975-03-12

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB399939A (en) 1932-06-22 1933-10-19 Chance Brothers And Company Lt Improvements relating to magnetic clutches
DE1882781U (en) * 1963-09-13 1963-11-14 Zahnradfabrik Friedrichshafen ELECTROMAGNETIC RELEASE CLUTCH OR BRAKE.
CH471334A (en) 1967-04-08 1969-04-15 Zahnradfabrik Friedrichshafen Friction clutch or brake that can be released electromagnetically against spring force
DD111969A1 (en) 1974-06-24 1975-03-12

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0326966A2 (en) * 1988-01-28 1989-08-09 Christian Mayr GmbH & Co. KG Electromagnetically actuated spring brake
EP0326966A3 (en) * 1988-01-28 1990-06-13 Christian Mayr Gmbh & Co. Kg Electromagnetically actuated spring brake
DE4138454C2 (en) * 1990-11-29 2002-01-03 Crown Equip Corp Three-stage electric brake
KR20170099887A (en) * 2014-12-26 2017-09-01 오리엔탈모터가부시끼가이샤 Friction brake structure
EP3239552A4 (en) * 2014-12-26 2018-11-21 Oriental Motor Co., Ltd. Friction brake structure
US10598235B2 (en) 2014-12-26 2020-03-24 Oriental Motor Co., Ltd. Friction brake structure
KR102437405B1 (en) * 2014-12-26 2022-08-29 오리엔탈모터가부시끼가이샤 Friction brake structure

Also Published As

Publication number Publication date
DE2625990C2 (en) 1984-09-06

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